diff --git a/Cargo.lock b/Cargo.lock
index dc5576c395..3c80417ae8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -84,18 +84,6 @@ version = "1.0.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "85bb70cc08ec97ca5450e6eba421deeea5f172c0fc61f78b5357b2a8e8be195f"
 
-[[package]]
-name = "app_dirs"
-version = "1.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e73a24bad9bd6a94d6395382a6c69fe071708ae4409f763c5475e14ee896313d"
-dependencies = [
- "ole32-sys",
- "shell32-sys",
- "winapi 0.2.8",
- "xdg",
-]
-
 [[package]]
 name = "approx"
 version = "0.3.2"
@@ -113,9 +101,9 @@ checksum = "b585a98a234c46fc563103e9278c9391fde1f4e6850334da895d27edb9580f62"
 
 [[package]]
 name = "array-bytes"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
@@ -155,7 +143,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0d0864d84b8e07b145449be9a8537db86bf9de5ce03b913214694643b4743502"
 dependencies = [
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -164,20 +152,30 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7deb0a829ca7bcfaf5da70b073a8d128619259a7be8216a355e23f00763059e5"
 
+[[package]]
+name = "async-macros"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e421d59b24c1feea2496e409b3e0a8de23e5fc130a2ddc0b012e551f3b272bba"
+dependencies = [
+ "futures-core-preview",
+ "pin-utils",
+]
+
 [[package]]
 name = "async-std"
-version = "1.5.0"
+version = "0.99.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "538ecb01eb64eecd772087e5b6f7540cbc917f047727339a472dafed2185b267"
+checksum = "44501a9f7961bb539b67be0c428b3694e26557046a52759ca7eaf790030a64cc"
 dependencies = [
- "async-task",
- "broadcaster",
- "crossbeam-channel",
+ "async-macros",
+ "async-task 1.3.1",
+ "crossbeam-channel 0.3.9",
  "crossbeam-deque",
- "crossbeam-utils",
+ "crossbeam-utils 0.6.6",
  "futures-core",
  "futures-io",
- "futures-timer 2.0.2",
+ "futures-timer 1.0.3",
  "kv-log-macro",
  "log",
  "memchr",
@@ -190,6 +188,30 @@ dependencies = [
  "slab",
 ]
 
+[[package]]
+name = "async-std"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a45cee2749d880d7066e328a7e161c7470ced883b2fd000ca4643e9f1dd5083a"
+dependencies = [
+ "async-task 3.0.0",
+ "crossbeam-utils 0.7.2",
+ "futures-channel",
+ "futures-core",
+ "futures-io",
+ "futures-timer 3.0.2",
+ "kv-log-macro",
+ "log",
+ "memchr",
+ "num_cpus",
+ "once_cell",
+ "pin-project-lite",
+ "pin-utils",
+ "slab",
+ "smol",
+ "wasm-bindgen-futures",
+]
+
 [[package]]
 name = "async-task"
 version = "1.3.1"
@@ -200,6 +222,12 @@ dependencies = [
  "winapi 0.3.8",
 ]
 
+[[package]]
+name = "async-task"
+version = "3.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c17772156ef2829aadc587461c7753af20b7e8db1529bc66855add962a3b35d3"
+
 [[package]]
 name = "async-tls"
 version = "0.7.0"
@@ -371,20 +399,6 @@ dependencies = [
  "byte-tools",
 ]
 
-[[package]]
-name = "broadcaster"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d9c972e21e0d055a36cf73e4daae870941fe7a8abcd5ac3396aab9e4c126bd87"
-dependencies = [
- "futures-channel",
- "futures-core",
- "futures-sink",
- "futures-util",
- "parking_lot 0.10.2",
- "slab",
-]
-
 [[package]]
 name = "bs58"
 version = "0.3.1"
@@ -641,13 +655,36 @@ dependencies = [
  "itertools 0.9.0",
 ]
 
+[[package]]
+name = "crossbeam"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69323bff1fb41c635347b8ead484a5ca6c3f11914d784170b158d8449ab07f8e"
+dependencies = [
+ "cfg-if",
+ "crossbeam-channel 0.4.2",
+ "crossbeam-deque",
+ "crossbeam-epoch",
+ "crossbeam-queue",
+ "crossbeam-utils 0.7.2",
+]
+
+[[package]]
+name = "crossbeam-channel"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8ec7fcd21571dc78f96cc96243cab8d8f035247c3efd16c687be154c3fa9efa"
+dependencies = [
+ "crossbeam-utils 0.6.6",
+]
+
 [[package]]
 name = "crossbeam-channel"
 version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cced8691919c02aac3cb0a1bc2e9b73d89e832bf9a06fc579d4e71b68a2da061"
 dependencies = [
- "crossbeam-utils",
+ "crossbeam-utils 0.7.2",
  "maybe-uninit",
 ]
 
@@ -658,7 +695,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f02af974daeee82218205558e51ec8768b48cf524bd01d550abe5573a608285"
 dependencies = [
  "crossbeam-epoch",
- "crossbeam-utils",
+ "crossbeam-utils 0.7.2",
  "maybe-uninit",
 ]
 
@@ -670,7 +707,7 @@ checksum = "058ed274caafc1f60c4997b5fc07bf7dc7cca454af7c6e81edffe5f33f70dace"
 dependencies = [
  "autocfg 1.0.0",
  "cfg-if",
- "crossbeam-utils",
+ "crossbeam-utils 0.7.2",
  "lazy_static",
  "maybe-uninit",
  "memoffset",
@@ -679,12 +716,22 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-queue"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c695eeca1e7173472a32221542ae469b3e9aac3a4fc81f7696bcad82029493db"
+checksum = "ab6bffe714b6bb07e42f201352c34f51fefd355ace793f9e638ebd52d23f98d2"
 dependencies = [
  "cfg-if",
- "crossbeam-utils",
+ "crossbeam-utils 0.7.2",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.6.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04973fa96e96579258a5091af6003abde64af786b860f18622b82e026cca60e6"
+dependencies = [
+ "cfg-if",
+ "lazy_static",
 ]
 
 [[package]]
@@ -747,20 +794,20 @@ dependencies = [
 
 [[package]]
 name = "curve25519-dalek"
-version = "2.0.0"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26778518a7f6cffa1d25a44b602b62b979bd88adb9e99ffec546998cf3404839"
+checksum = "5d85653f070353a16313d0046f173f70d1aadd5b42600a14de626f0dfb3473a5"
 dependencies = [
  "byteorder",
  "digest",
  "rand_core 0.5.1",
- "subtle 2.2.2",
+ "subtle 2.2.3",
  "zeroize",
 ]
 
 [[package]]
 name = "darwinia-balances"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "darwinia-balances-rpc-runtime-api",
  "darwinia-support",
@@ -773,12 +820,12 @@ dependencies = [
  "sp-core",
  "sp-io",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "darwinia-balances-rpc"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "darwinia-balances-rpc-runtime-api",
  "jsonrpc-core",
@@ -792,7 +839,7 @@ dependencies = [
 
 [[package]]
 name = "darwinia-balances-rpc-runtime-api"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "darwinia-support",
  "parity-scale-codec",
@@ -803,7 +850,7 @@ dependencies = [
 
 [[package]]
 name = "darwinia-claims"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "array-bytes",
  "darwinia-balances",
@@ -817,13 +864,13 @@ dependencies = [
  "sp-core",
  "sp-io",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "tiny-keccak 1.5.0",
 ]
 
 [[package]]
 name = "darwinia-elections-phragmen"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "darwinia-balances",
  "darwinia-support",
@@ -836,13 +883,13 @@ dependencies = [
  "sp-io",
  "sp-phragmen",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "substrate-test-utils",
 ]
 
 [[package]]
 name = "darwinia-eth-backing"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "array-bytes",
  "darwinia-balances",
@@ -862,12 +909,12 @@ dependencies = [
  "sp-io",
  "sp-runtime",
  "sp-staking",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "darwinia-eth-offchain"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "array-bytes",
  "darwinia-balances",
@@ -882,12 +929,12 @@ dependencies = [
  "sp-core",
  "sp-io",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "darwinia-eth-relay"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "array-bytes",
  "darwinia-balances",
@@ -905,12 +952,12 @@ dependencies = [
  "sp-core",
  "sp-io",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "darwinia-header-mmr"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "ckb-merkle-mountain-range",
  "frame-support",
@@ -921,12 +968,12 @@ dependencies = [
  "sp-core",
  "sp-io",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "darwinia-staking"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "darwinia-balances",
  "darwinia-staking-rpc-runtime-api",
@@ -947,7 +994,7 @@ dependencies = [
  "sp-phragmen",
  "sp-runtime",
  "sp-staking",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-storage",
  "static_assertions 1.1.0",
  "substrate-test-utils",
@@ -955,7 +1002,7 @@ dependencies = [
 
 [[package]]
 name = "darwinia-staking-rpc"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "darwinia-staking-rpc-runtime-api",
  "jsonrpc-core",
@@ -969,7 +1016,7 @@ dependencies = [
 
 [[package]]
 name = "darwinia-staking-rpc-runtime-api"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "darwinia-support",
  "parity-scale-codec",
@@ -980,19 +1027,19 @@ dependencies = [
 
 [[package]]
 name = "darwinia-support"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "frame-support",
  "impl-trait-for-tuples",
  "num-traits 0.2.11",
  "parity-scale-codec",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "darwinia-treasury"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "darwinia-balances",
  "darwinia-support",
@@ -1003,14 +1050,14 @@ dependencies = [
  "sp-core",
  "sp-io",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "data-encoding"
-version = "2.2.0"
+version = "2.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11c0346158a19b3627234e15596f5e465c360fcdb97d817bcb255e0510f5a788"
+checksum = "72aa14c04dfae8dd7d8a2b1cb7ca2152618cd01336dbfe704b8dcbf8d41dbd69"
 
 [[package]]
 name = "derive_more"
@@ -1020,7 +1067,7 @@ checksum = "2127768764f1556535c01b5326ef94bd60ff08dcfbdc544d53e69ed155610f5d"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -1032,6 +1079,28 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "directories"
+version = "2.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "551a778172a450d7fc12e629ca3b0428d00f6afa9a43da1b630d54604e97371c"
+dependencies = [
+ "cfg-if",
+ "dirs-sys",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "afa0b23de8fd801745c471deffa6e12d248f962c9fd4b4c33787b055599bde7b"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "redox_users",
+ "winapi 0.3.8",
+]
+
 [[package]]
 name = "dns-parser"
 version = "0.8.0"
@@ -1107,7 +1176,7 @@ dependencies = [
 
 [[package]]
 name = "eth-primitives"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "array-bytes",
  "ethash",
@@ -1126,7 +1195,7 @@ dependencies = [
  "serde",
  "serde_json",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "triehash",
 ]
 
@@ -1140,7 +1209,7 @@ dependencies = [
  "serde",
  "serde_derive",
  "serde_json",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
+ "sp-std 2.0.0-alpha.8",
  "tiny-keccak 1.5.0",
 ]
 
@@ -1246,7 +1315,7 @@ checksum = "aa4da3c766cd7a0db8242e326e9e4e081edd567072893ed320008189715366a4"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
  "synstructure",
 ]
 
@@ -1343,16 +1412,16 @@ checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
 [[package]]
 name = "fork-tree"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "parity-scale-codec",
 ]
 
 [[package]]
 name = "frame-benchmarking"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -1363,13 +1432,13 @@ dependencies = [
  "sp-io",
  "sp-runtime",
  "sp-runtime-interface",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "frame-benchmarking-cli"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-benchmarking",
  "parity-scale-codec",
@@ -1386,8 +1455,8 @@ dependencies = [
 
 [[package]]
 name = "frame-executive"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -1395,25 +1464,25 @@ dependencies = [
  "serde",
  "sp-io",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-tracing",
 ]
 
 [[package]]
 name = "frame-metadata"
-version = "11.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "11.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "parity-scale-codec",
  "serde",
  "sp-core",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "frame-support"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "bitmask",
  "frame-metadata",
@@ -1424,53 +1493,54 @@ dependencies = [
  "parity-scale-codec",
  "paste",
  "serde",
+ "smallvec 1.4.0",
  "sp-arithmetic",
  "sp-core",
  "sp-inherents",
  "sp-io",
  "sp-runtime",
  "sp-state-machine",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-tracing",
 ]
 
 [[package]]
 name = "frame-support-procedural"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support-procedural-tools",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
 name = "frame-support-procedural-tools"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support-procedural-tools-derive",
  "proc-macro-crate",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
 name = "frame-support-procedural-tools-derive"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
 name = "frame-system"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "impl-trait-for-tuples",
@@ -1479,7 +1549,7 @@ dependencies = [
  "sp-core",
  "sp-io",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-version",
 ]
 
@@ -1622,7 +1692,7 @@ dependencies = [
  "proc-macro-hack",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -1640,6 +1710,16 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "futures-timer"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7946248e9429ff093345d3e8fdf4eb0f9b2d79091611c9c14f744971a6f8be45"
+dependencies = [
+ "futures-core-preview",
+ "pin-utils",
+]
+
 [[package]]
 name = "futures-timer"
 version = "2.0.2"
@@ -1651,6 +1731,10 @@ name = "futures-timer"
 version = "3.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e64b03909df88034c26dc1547e8970b91f98bdb65165d6a4e9110d94263dbb2c"
+dependencies = [
+ "gloo-timers",
+ "send_wrapper 0.4.0",
+]
 
 [[package]]
 name = "futures-util"
@@ -1770,6 +1854,19 @@ dependencies = [
  "regex",
 ]
 
+[[package]]
+name = "gloo-timers"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47204a46aaff920a1ea58b11d03dec6f704287d27561724a4631e450654a891f"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
 [[package]]
 name = "h2"
 version = "0.1.26"
@@ -2006,9 +2103,9 @@ dependencies = [
 
 [[package]]
 name = "hyper"
-version = "0.13.5"
+version = "0.13.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96816e1d921eca64d208a85aab4f7798455a8e34229ee5a88c935bdee1b78b14"
+checksum = "a6e7655b9594024ad0ee439f3b5a7299369dc2a3f459b47c696f9ff676f9aa1f"
 dependencies = [
  "bytes 0.5.4",
  "futures-channel",
@@ -2020,8 +2117,8 @@ dependencies = [
  "httparse",
  "itoa",
  "log",
- "net2",
  "pin-project",
+ "socket2",
  "time",
  "tokio 0.2.21",
  "tower-service",
@@ -2037,7 +2134,7 @@ dependencies = [
  "bytes 0.5.4",
  "ct-logs",
  "futures-util",
- "hyper 0.13.5",
+ "hyper 0.13.6",
  "log",
  "rustls",
  "rustls-native-certs",
@@ -2136,7 +2233,7 @@ checksum = "7ef5550a42e3740a0e71f909d4c861056a284060af885ae7aa6242820f920d9d"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -2220,9 +2317,9 @@ dependencies = [
 
 [[package]]
 name = "js-sys"
-version = "0.3.39"
+version = "0.3.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa5a448de267e7358beaf4a5d849518fe9a0c13fce7afd44b06e68550e5562a7"
+checksum = "ce10c23ad2ea25ceca0093bd3192229da4c5b3c0f2de499c1ecac0d98d452177"
 dependencies = [
  "wasm-bindgen",
 ]
@@ -2274,7 +2371,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -2372,9 +2469,9 @@ dependencies = [
 
 [[package]]
 name = "kv-log-macro"
-version = "1.0.5"
+version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2a2d3beed37e5483887d81eb39de6de03a8346531410e1306ca48a9a89bd3a51"
+checksum = "4ff57d6d215f7ca7eb35a9a64d656ba4d9d2bef114d741dc08048e75e2f5d418"
 dependencies = [
  "log",
 ]
@@ -2432,15 +2529,15 @@ checksum = "b294d6fa9ee409a054354afc4352b0b9ef7ca222c69b8812cbea9e7d2bf3783f"
 
 [[package]]
 name = "libc"
-version = "0.2.70"
+version = "0.2.71"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3baa92041a6fec78c687fa0cc2b3fae8884f743d672cf551bed1d6dac6988d0f"
+checksum = "9457b06509d27052635f90d6466700c65095fdf75409b3fbdd903e988b886f49"
 
 [[package]]
 name = "libflate"
-version = "1.0.0"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1fbe6b967a94346446d37ace319ae85be7eca261bb8149325811ac435d35d64"
+checksum = "784f4ec5908a9d7f4e53658906386667e8b02e9389a47cfebf45d324ba9e8d25"
 dependencies = [
  "adler32",
  "crc32fast",
@@ -2472,9 +2569,9 @@ checksum = "c7d73b3f436185384286bd8098d17ec07c9a7d2388a6599f824d8502b529702a"
 
 [[package]]
 name = "libp2p"
-version = "0.18.1"
+version = "0.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32ea742c86405b659c358223a8f0f9f5a9eb27bb6083894c6340959b05269662"
+checksum = "057eba5432d3e740e313c6e13c9153d0cb76b4f71bfc2e5242ae5bdb7d41af67"
 dependencies = [
  "bytes 0.5.4",
  "futures 0.3.5",
@@ -2494,7 +2591,7 @@ dependencies = [
  "libp2p-websocket",
  "libp2p-yamux",
  "multihash",
- "parity-multiaddr 0.8.0",
+ "parity-multiaddr 0.9.0",
  "parking_lot 0.10.2",
  "pin-project",
  "smallvec 1.4.0",
@@ -2503,9 +2600,9 @@ dependencies = [
 
 [[package]]
 name = "libp2p-core"
-version = "0.18.0"
+version = "0.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1d2c17158c4dca984a77a5927aac6f0862d7f50c013470a415f93be498b5739"
+checksum = "4f5e30dcd8cb13a02ad534e214da234eca1595a76b5788b645dfa5c734d2124b"
 dependencies = [
  "asn1_der",
  "bs58",
@@ -2519,7 +2616,7 @@ dependencies = [
  "log",
  "multihash",
  "multistream-select",
- "parity-multiaddr 0.8.0",
+ "parity-multiaddr 0.9.0",
  "parking_lot 0.10.2",
  "pin-project",
  "prost",
@@ -2537,19 +2634,19 @@ dependencies = [
 
 [[package]]
 name = "libp2p-core-derive"
-version = "0.18.0"
+version = "0.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "329127858e4728db5ab60c33d5ae352a999325fdf190ed022ec7d3a4685ae2e6"
+checksum = "f09548626b737ed64080fde595e06ce1117795b8b9fc4d2629fa36561c583171"
 dependencies = [
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
 name = "libp2p-dns"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0d0993481203d68e5ce2f787d033fb0cac6b850659ed6c784612db678977c71"
+checksum = "3cc186d9a941fd0207cf8f08ef225a735e2d7296258f570155e525f6ee732f87"
 dependencies = [
  "futures 0.3.5",
  "libp2p-core",
@@ -2558,9 +2655,9 @@ dependencies = [
 
 [[package]]
 name = "libp2p-identify"
-version = "0.18.0"
+version = "0.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a38ca3eb807789e26f41c82ca7cd2b3843c66c5587b8b5f709a2f421f3061414"
+checksum = "6438ed8ca240c7635c9caa3be6c5258bc0058553ae97ba81737f04e5d33804f5"
 dependencies = [
  "futures 0.3.5",
  "libp2p-core",
@@ -2574,9 +2671,9 @@ dependencies = [
 
 [[package]]
 name = "libp2p-kad"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a92cda1fb8149ea64d092a2b99d2bd7a2c309eee38ea322d02e4480bd6ee1759"
+checksum = "41d6c1d5100973527ae70d82687465b17049c1b717a7964de38b8e65000878ff"
 dependencies = [
  "arrayvec 0.5.1",
  "bytes 0.5.4",
@@ -2601,11 +2698,11 @@ dependencies = [
 
 [[package]]
 name = "libp2p-mdns"
-version = "0.18.0"
+version = "0.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "41e908d2aaf8ff0ec6ad1f02fe1844fd777fb0b03a68a226423630750ab99471"
+checksum = "51b00163d13f705aae67c427bea0575f8aaf63da6524f9bd4a5a093b8bda0b38"
 dependencies = [
- "async-std",
+ "async-std 0.99.12",
  "data-encoding",
  "dns-parser",
  "either",
@@ -2623,9 +2720,9 @@ dependencies = [
 
 [[package]]
 name = "libp2p-mplex"
-version = "0.18.0"
+version = "0.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0832882b06619b2e81d74e71447753ea3c068164a0bca67847d272e856a04a02"
+checksum = "34ce63313ad4bce2d76e54c292a1293ea47a0ebbe16708f1513fa62184992f53"
 dependencies = [
  "bytes 0.5.4",
  "fnv",
@@ -2639,9 +2736,9 @@ dependencies = [
 
 [[package]]
 name = "libp2p-noise"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "918e94a649e1139c24ee9f1f8c1f2adaba6d157b9471af787f2d9beac8c29c77"
+checksum = "84fd504e27b0eadd451e06b67694ef714bd8374044e7db339bb0cdb83755ddf4"
 dependencies = [
  "curve25519-dalek",
  "futures 0.3.5",
@@ -2660,9 +2757,9 @@ dependencies = [
 
 [[package]]
 name = "libp2p-ping"
-version = "0.18.0"
+version = "0.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f9bfbf87eebb492d040f9899c5c81c9738730465ac5e78d9b7a7d086d0f07230"
+checksum = "c189cf1dfe4b3f01e2c0fe5e97a6f5df8aeb6f3569e26981015eb7c08015ce5f"
 dependencies = [
  "futures 0.3.5",
  "libp2p-core",
@@ -2675,9 +2772,9 @@ dependencies = [
 
 [[package]]
 name = "libp2p-swarm"
-version = "0.18.1"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44ab289ae44cc691da0a6fe96aefa43f26c86c6c7813998e203f6d80f1860f18"
+checksum = "b4a8101a0e0d5f04562137a476bf5f5423cd5bdab2f7e43a75909668e63cb102"
 dependencies = [
  "futures 0.3.5",
  "libp2p-core",
@@ -2690,24 +2787,25 @@ dependencies = [
 
 [[package]]
 name = "libp2p-tcp"
-version = "0.18.0"
+version = "0.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b37ea44823d3ed223e4605da94b50177bc520f05ae2452286700549a32d81669"
+checksum = "309f95fce9bec755eff5406f8b822fd3969990830c2b54f752e1fc181d5ace3e"
 dependencies = [
- "async-std",
+ "async-std 0.99.12",
  "futures 0.3.5",
  "futures-timer 3.0.2",
  "get_if_addrs",
  "ipnet",
  "libp2p-core",
  "log",
+ "socket2",
 ]
 
 [[package]]
 name = "libp2p-wasm-ext"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e3ac7dbde0f88cad191dcdfd073b8bae28d01823e8ca313f117b6ecb914160c3"
+checksum = "f59fdbb5706f2723ca108c088b1c7a37f735a8c328021f0508007162627e9885"
 dependencies = [
  "futures 0.3.5",
  "js-sys",
@@ -2719,9 +2817,9 @@ dependencies = [
 
 [[package]]
 name = "libp2p-websocket"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6874c9069ce93d899df9dc7b29f129c706b2a0fdc048f11d878935352b580190"
+checksum = "085fbe4c05c4116c2164ab4d5a521eb6e00516c444f61b3ee9f68c7b1e53580b"
 dependencies = [
  "async-tls",
  "bytes 0.5.4",
@@ -2740,9 +2838,9 @@ dependencies = [
 
 [[package]]
 name = "libp2p-yamux"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02f91aea50f6571e0bc6c058dc0e9b270afd41ec28dd94e9e4bf607e78b9ab87"
+checksum = "0b305d3a8981e68f11c0e17f2d11d5c52fae95e0d7c283f9e462b5b2dab413b2"
 dependencies = [
  "futures 0.3.5",
  "libp2p-core",
@@ -2775,7 +2873,7 @@ dependencies = [
  "hmac-drbg",
  "rand 0.7.3",
  "sha2",
- "subtle 2.2.2",
+ "subtle 2.2.3",
  "typenum",
 ]
 
@@ -2837,9 +2935,9 @@ dependencies = [
 
 [[package]]
 name = "lru"
-version = "0.4.4"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "348b828e43d7d1d7a247a6ece0c041d95fb0e34d5496bb4c308428face25df6b"
+checksum = "9e488db3a9e108382265a30764f43cfc87517322e5d04ae0603b32a33461dca3"
 dependencies = [
  "hashbrown 0.6.3",
 ]
@@ -2910,7 +3008,7 @@ checksum = "71d96e3f3c0b6325d8ccd83c33b28acb183edcb6c67938ba104ec546854b0882"
 
 [[package]]
 name = "merkle-patricia-trie"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "criterion",
  "ethereum-types 0.5.2",
@@ -2919,7 +3017,7 @@ dependencies = [
  "keccak-hash",
  "rand 0.7.3",
  "rlp 0.4.4",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "uuid",
 ]
 
@@ -3000,9 +3098,9 @@ dependencies = [
 
 [[package]]
 name = "multihash"
-version = "0.10.1"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47fbc227f7e2b1cb701f95404579ecb2668abbdd3c7ef7a6cbb3cc0d3b236869"
+checksum = "f75db05d738947aa5389863aadafbcf2e509d7ba099dc2ddcdf4fc66bf7a9e03"
 dependencies = [
  "blake2b_simd",
  "blake2s_simd",
@@ -3021,9 +3119,9 @@ checksum = "d8883adfde9756c1d30b0f519c9b8c502a94b41ac62f696453c37c7fc0a958ce"
 
 [[package]]
 name = "multistream-select"
-version = "0.8.0"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "74cdcf7cfb3402881e15a1f95116cb033d69b33c83d481e1234777f5ef0c3d2c"
+checksum = "991c33683908c588b8f2cf66c221d8f390818c1bdcd13fce55208408e027a796"
 dependencies = [
  "bytes 0.5.4",
  "futures 0.3.5",
@@ -3099,7 +3197,7 @@ dependencies = [
 
 [[package]]
 name = "node-template"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "darwinia-balances-rpc",
  "darwinia-claims",
@@ -3140,7 +3238,7 @@ dependencies = [
 
 [[package]]
 name = "node-template-runtime"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "darwinia-balances",
  "darwinia-balances-rpc-runtime-api",
@@ -3185,7 +3283,7 @@ dependencies = [
  "sp-runtime",
  "sp-session",
  "sp-staking",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-transaction-pool",
  "sp-version",
  "static_assertions 1.1.0",
@@ -3301,16 +3399,6 @@ version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9cbca9424c482ee628fa549d9c812e2cd22f1180b9222c9200fdfa6eb31aecb2"
 
-[[package]]
-name = "ole32-sys"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d2c49021782e5233cd243168edfa8037574afed4eba4bbaf538b3d8d1789d8c"
-dependencies = [
- "winapi 0.2.8",
- "winapi-build",
-]
-
 [[package]]
 name = "once_cell"
 version = "1.4.0"
@@ -3349,8 +3437,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-authority-discovery"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3359,33 +3447,29 @@ dependencies = [
  "serde",
  "sp-application-crypto",
  "sp-authority-discovery",
- "sp-core",
- "sp-io",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "pallet-authorship"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "frame-system",
  "impl-trait-for-tuples",
  "parity-scale-codec",
  "sp-authorship",
- "sp-core",
  "sp-inherents",
- "sp-io",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "pallet-babe"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3400,29 +3484,28 @@ dependencies = [
  "sp-io",
  "sp-runtime",
  "sp-staking",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-timestamp",
 ]
 
 [[package]]
 name = "pallet-balances"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
  "frame-system",
  "parity-scale-codec",
  "serde",
- "sp-io",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "pallet-collective"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3431,13 +3514,13 @@ dependencies = [
  "sp-core",
  "sp-io",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "pallet-finality-tracker"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3447,13 +3530,13 @@ dependencies = [
  "sp-finality-tracker",
  "sp-inherents",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "pallet-grandpa"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3467,13 +3550,13 @@ dependencies = [
  "sp-runtime",
  "sp-session",
  "sp-staking",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "pallet-im-online"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3486,13 +3569,13 @@ dependencies = [
  "sp-io",
  "sp-runtime",
  "sp-staking",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "pallet-offences"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3501,26 +3584,26 @@ dependencies = [
  "serde",
  "sp-runtime",
  "sp-staking",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "pallet-randomness-collective-flip"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "frame-system",
  "parity-scale-codec",
  "safe-mix",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "pallet-session"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3528,18 +3611,17 @@ dependencies = [
  "pallet-timestamp",
  "parity-scale-codec",
  "serde",
- "sp-io",
  "sp-runtime",
  "sp-session",
  "sp-staking",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-trie",
 ]
 
 [[package]]
 name = "pallet-sudo"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3547,13 +3629,13 @@ dependencies = [
  "serde",
  "sp-io",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "pallet-timestamp"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3563,34 +3645,35 @@ dependencies = [
  "serde",
  "sp-inherents",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-timestamp",
 ]
 
 [[package]]
 name = "pallet-transaction-payment"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "frame-system",
  "pallet-transaction-payment-rpc-runtime-api",
  "parity-scale-codec",
+ "smallvec 1.4.0",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "pallet-transaction-payment-rpc-runtime-api"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "frame-support",
  "parity-scale-codec",
  "serde",
  "sp-api",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
@@ -3627,9 +3710,9 @@ dependencies = [
 
 [[package]]
 name = "parity-multiaddr"
-version = "0.8.0"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4db35e222f783ef4e6661873f6c165c4eb7b65e0c408349818517d5705c2d7d3"
+checksum = "12ca96399f4a01aa89c59220c4f52ac371940eb4e53e3ce990da796f364bdf69"
 dependencies = [
  "arrayref",
  "bs58",
@@ -3680,7 +3763,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -3711,7 +3794,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f557c32c6d268a07c921471619c0295f5efad3a0e76d4f97a05c091a51d110b2"
 dependencies = [
  "proc-macro2",
- "syn 1.0.23",
+ "syn 1.0.30",
  "synstructure",
 ]
 
@@ -3773,9 +3856,9 @@ dependencies = [
 
 [[package]]
 name = "paste"
-version = "0.1.12"
+version = "0.1.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a229b1c58c692edcaa5b9b0948084f130f55d2dcc15b02fcc5340b2b4521476"
+checksum = "d53181dcd37421c08d3b69f887784956674d09c3f9a47a04fece2b130a5b346b"
 dependencies = [
  "paste-impl",
  "proc-macro-hack",
@@ -3783,14 +3866,14 @@ dependencies = [
 
 [[package]]
 name = "paste-impl"
-version = "0.1.12"
+version = "0.1.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2e0bf239e447e67ff6d16a8bb5e4d4bd2343acf5066061c0e8e06ac5ba8ca68c"
+checksum = "05ca490fa1c034a71412b4d1edcb904ec5a0981a4426c9eb2128c0fda7a68d17"
 dependencies = [
  "proc-macro-hack",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -3829,9 +3912,9 @@ checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
 [[package]]
 name = "petgraph"
-version = "0.5.0"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "29c127eea4a29ec6c85d153c59dc1213f33ec74cead30fe4730aecc88cc1fd92"
+checksum = "467d164a6de56270bd7c4d070df81d07beace25012d5103ced4e9ff08d6afdb7"
 dependencies = [
  "fixedbitset",
  "indexmap",
@@ -3854,14 +3937,14 @@ checksum = "e58db2081ba5b4c93bd6be09c40fd36cb9193a8336c384f3b40012e531aa7e40"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
 name = "pin-project-lite"
-version = "0.1.5"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7505eeebd78492e0f6108f7171c4948dbb120ee8119d9d77d0afa5469bef67f"
+checksum = "9df32da11d84f3a7d70205549562966279adb900e080fad3dccd8e64afccf0ad"
 
 [[package]]
 name = "pin-utils"
@@ -3869,6 +3952,18 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
+[[package]]
+name = "piper"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "01608bfa680dafb103f9207fa944facf572e4e3e708d10de19a0d0c3d36e5f18"
+dependencies = [
+ "crossbeam-utils 0.7.2",
+ "futures-io",
+ "futures-sink",
+ "futures-util",
+]
+
 [[package]]
 name = "pkg-config"
 version = "0.3.17"
@@ -3883,9 +3978,9 @@ checksum = "feb3b2b1033b8a60b4da6ee470325f887758c95d5320f52f9ce0df055a55940e"
 
 [[package]]
 name = "plotters"
-version = "0.2.14"
+version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f9b1d9ca091d370ea3a78d5619145d1b59426ab0c9eedbad2514a4cee08bf389"
+checksum = "0d1685fbe7beba33de0330629da9d955ac75bd54f33d7b79f9a895590124f6bb"
 dependencies = [
  "js-sys",
  "num-traits 0.2.11",
@@ -3941,7 +4036,7 @@ dependencies = [
  "proc-macro-error-attr",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
  "version_check",
 ]
 
@@ -3953,16 +4048,16 @@ checksum = "4f5444ead4e9935abd7f27dc51f7e852a0569ac888096d5ec2499470794e2e53"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
  "syn-mid",
  "version_check",
 ]
 
 [[package]]
 name = "proc-macro-hack"
-version = "0.5.15"
+version = "0.5.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d659fe7c6d27f25e9d80a1a094c223f5246f6a6596453e09d7229bf42750b63"
+checksum = "7e0456befd48169b9f13ef0f0ad46d492cf9d2dbb918bcf38e01eed4ce3ec5e4"
 
 [[package]]
 name = "proc-macro-nested"
@@ -3972,9 +4067,9 @@ checksum = "8e946095f9d3ed29ec38de908c22f95d9ac008e424c7bcae54c75a79c527c694"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.14"
+version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de40dd4ff82d9c9bab6dae29dbab1167e515f8df9ed17d2987cb6012db206933"
+checksum = "beae6331a816b1f65d04c45b078fd8e6c93e8071771f41b8163255bbd8d7c8fa"
 dependencies = [
  "unicode-xid 0.2.0",
 ]
@@ -4046,7 +4141,7 @@ dependencies = [
  "itertools 0.8.2",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -4321,7 +4416,7 @@ checksum = "08a89b46efaf957e52b18062fb2f4660f8b8a4dde1807ca002690868ef2c85a9"
 dependencies = [
  "crossbeam-deque",
  "crossbeam-queue",
- "crossbeam-utils",
+ "crossbeam-utils 0.7.2",
  "lazy_static",
  "num_cpus",
 ]
@@ -4341,6 +4436,17 @@ version = "0.1.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2439c63f3f6139d1b57529d16bc3b8bb855230c8efcc5d3a896c8bea7c3b1e84"
 
+[[package]]
+name = "redox_users"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09b23093265f8d200fa7b4c2c76297f47e681c655f6f1285a8780d6a022f7431"
+dependencies = [
+ "getrandom",
+ "redox_syscall",
+ "rust-argon2",
+]
+
 [[package]]
 name = "ref-cast"
 version = "1.0.1"
@@ -4358,14 +4464,14 @@ checksum = "602eb59cda66fcb9aec25841fb76bc01d2b34282dcdd705028da297db6f3eec8"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
 name = "regex"
-version = "1.3.7"
+version = "1.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a6020f034922e3194c711b82a627453881bc4682166cabb07134a10c26ba7692"
+checksum = "9c3780fcf44b193bc4d09f36d2a3c87b251da4a046c87795a0d35f4f927ad8e6"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -4384,9 +4490,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.17"
+version = "0.6.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fe5bd57d1d7414c6b5ed48563a2c855d995ff777729dcd91c369ec7fea395ae"
+checksum = "26412eb97c6b088a6997e05f69403a802a92d520de2f8e63c2b65f9e0f47c4e8"
 
 [[package]]
 name = "remove_dir_all"
@@ -4399,9 +4505,9 @@ dependencies = [
 
 [[package]]
 name = "ring"
-version = "0.16.13"
+version = "0.16.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "703516ae74571f24b465b4a1431e81e2ad51336cb0ded733a55a1aa3eccac196"
+checksum = "06b3fefa4f12272808f809a0af618501fdaba41a58963c5fb72238ab0be09603"
 dependencies = [
  "cc",
  "libc",
@@ -4442,7 +4548,7 @@ source = "git+https://github.com/darwinia-network/parity-common.git#12a86aa8af8f
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -4465,6 +4571,18 @@ dependencies = [
  "winapi 0.3.8",
 ]
 
+[[package]]
+name = "rust-argon2"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2bc8af4bda8e1ff4932523b94d3dd20ee30a87232323eda55903ffd71d2fb017"
+dependencies = [
+ "base64",
+ "blake2b_simd",
+ "constant_time_eq",
+ "crossbeam-utils 0.7.2",
+]
+
 [[package]]
 name = "rustc-demangle"
 version = "0.1.16"
@@ -4530,9 +4648,9 @@ dependencies = [
 
 [[package]]
 name = "ryu"
-version = "1.0.4"
+version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed3d612bc64430efeb3f7ee6ef26d590dce0c43249217bddc62112540c7941e1"
+checksum = "71d301d4193d031abdd79ff7e3dd721168a9572ef3fe51a1517aba235bd8f86e"
 
 [[package]]
 name = "safe-mix"
@@ -4554,8 +4672,8 @@ dependencies = [
 
 [[package]]
 name = "sc-basic-authorship"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "futures 0.3.5",
  "futures-timer 3.0.2",
@@ -4563,6 +4681,7 @@ dependencies = [
  "parity-scale-codec",
  "sc-block-builder",
  "sc-client-api",
+ "sc-proposer-metrics",
  "sc-telemetry",
  "sp-api",
  "sp-blockchain",
@@ -4571,13 +4690,14 @@ dependencies = [
  "sp-inherents",
  "sp-runtime",
  "sp-transaction-pool",
+ "substrate-prometheus-endpoint",
  "tokio-executor 0.2.0-alpha.6",
 ]
 
 [[package]]
 name = "sc-block-builder"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "parity-scale-codec",
  "sc-client-api",
@@ -4592,8 +4712,8 @@ dependencies = [
 
 [[package]]
 name = "sc-chain-spec"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "impl-trait-for-tuples",
  "sc-chain-spec-derive",
@@ -4608,26 +4728,25 @@ dependencies = [
 
 [[package]]
 name = "sc-chain-spec-derive"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
 name = "sc-cli"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "ansi_term 0.12.1",
- "app_dirs",
  "atty",
  "chrono",
- "clap",
  "derive_more",
+ "directories",
  "env_logger",
  "fdlimit",
  "futures 0.3.5",
@@ -4661,8 +4780,8 @@ dependencies = [
 
 [[package]]
 name = "sc-client-api"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "fnv",
@@ -4686,7 +4805,7 @@ dependencies = [
  "sp-keyring",
  "sp-runtime",
  "sp-state-machine",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-storage",
  "sp-transaction-pool",
  "sp-trie",
@@ -4697,8 +4816,8 @@ dependencies = [
 
 [[package]]
 name = "sc-client-db"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "blake2-rfc",
  "hash-db",
@@ -4726,8 +4845,8 @@ dependencies = [
 
 [[package]]
 name = "sc-consensus"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "sc-client-api",
  "sp-blockchain",
@@ -4737,8 +4856,8 @@ dependencies = [
 
 [[package]]
 name = "sc-consensus-babe"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "fork-tree",
@@ -4779,8 +4898,8 @@ dependencies = [
 
 [[package]]
 name = "sc-consensus-epochs"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "fork-tree",
  "parity-scale-codec",
@@ -4792,8 +4911,8 @@ dependencies = [
 
 [[package]]
 name = "sc-consensus-slots"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "futures 0.3.5",
  "futures-timer 3.0.2",
@@ -4814,8 +4933,8 @@ dependencies = [
 
 [[package]]
 name = "sc-consensus-uncles"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "log",
  "sc-client-api",
@@ -4828,8 +4947,8 @@ dependencies = [
 
 [[package]]
 name = "sc-executor"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "lazy_static",
@@ -4855,8 +4974,8 @@ dependencies = [
 
 [[package]]
 name = "sc-executor-common"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "log",
@@ -4872,8 +4991,8 @@ dependencies = [
 
 [[package]]
 name = "sc-executor-wasmi"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "log",
  "parity-scale-codec",
@@ -4887,8 +5006,8 @@ dependencies = [
 
 [[package]]
 name = "sc-finality-grandpa"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "assert_matches",
  "derive_more",
@@ -4924,8 +5043,8 @@ dependencies = [
 
 [[package]]
 name = "sc-finality-grandpa-rpc"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "finality-grandpa",
@@ -4941,8 +5060,8 @@ dependencies = [
 
 [[package]]
 name = "sc-informant"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "ansi_term 0.12.1",
  "futures 0.3.5",
@@ -4958,8 +5077,8 @@ dependencies = [
 
 [[package]]
 name = "sc-keystore"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "hex",
@@ -4968,15 +5087,16 @@ dependencies = [
  "serde_json",
  "sp-application-crypto",
  "sp-core",
- "subtle 2.2.2",
+ "subtle 2.2.3",
 ]
 
 [[package]]
 name = "sc-network"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "bitflags",
+ "bs58",
  "bytes 0.5.4",
  "derive_more",
  "either",
@@ -5024,8 +5144,8 @@ dependencies = [
 
 [[package]]
 name = "sc-network-gossip"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "futures 0.3.5",
  "futures-timer 3.0.2",
@@ -5039,14 +5159,14 @@ dependencies = [
 
 [[package]]
 name = "sc-offchain"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "bytes 0.5.4",
  "fnv",
  "futures 0.3.5",
  "futures-timer 3.0.2",
- "hyper 0.13.5",
+ "hyper 0.13.6",
  "hyper-rustls",
  "log",
  "num_cpus",
@@ -5066,8 +5186,8 @@ dependencies = [
 
 [[package]]
 name = "sc-peerset"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "futures 0.3.5",
  "libp2p",
@@ -5077,10 +5197,19 @@ dependencies = [
  "wasm-timer",
 ]
 
+[[package]]
+name = "sc-proposer-metrics"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
+dependencies = [
+ "log",
+ "substrate-prometheus-endpoint",
+]
+
 [[package]]
 name = "sc-rpc"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "futures 0.3.5",
  "hash-db",
@@ -5111,8 +5240,8 @@ dependencies = [
 
 [[package]]
 name = "sc-rpc-api"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "futures 0.3.5",
@@ -5135,8 +5264,8 @@ dependencies = [
 
 [[package]]
 name = "sc-rpc-server"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "jsonrpc-core",
  "jsonrpc-http-server",
@@ -5150,8 +5279,8 @@ dependencies = [
 
 [[package]]
 name = "sc-service"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "exit-future",
@@ -5208,8 +5337,8 @@ dependencies = [
 
 [[package]]
 name = "sc-state-db"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "log",
  "parity-scale-codec",
@@ -5222,8 +5351,8 @@ dependencies = [
 
 [[package]]
 name = "sc-telemetry"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "bytes 0.5.4",
  "futures 0.3.5",
@@ -5244,8 +5373,8 @@ dependencies = [
 
 [[package]]
 name = "sc-tracing"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "erased-serde",
  "log",
@@ -5259,8 +5388,8 @@ dependencies = [
 
 [[package]]
 name = "sc-transaction-graph"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "futures 0.3.5",
@@ -5279,8 +5408,8 @@ dependencies = [
 
 [[package]]
 name = "sc-transaction-pool"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "futures 0.3.5",
@@ -5327,10 +5456,16 @@ dependencies = [
  "rand 0.7.3",
  "rand_core 0.5.1",
  "sha2",
- "subtle 2.2.2",
+ "subtle 2.2.3",
  "zeroize",
 ]
 
+[[package]]
+name = "scoped-tls-hkt"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2e9d7eaddb227e8fbaaa71136ae0e1e913ca159b86c7da82f3e8f0044ad3a63"
+
 [[package]]
 name = "scopeguard"
 version = "1.1.0"
@@ -5391,24 +5526,30 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a0eddf2e8f50ced781f288c19f18621fa72a3779e3cb58dbf23b07469b0abeb4"
 
+[[package]]
+name = "send_wrapper"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f638d531eccd6e23b980caf34876660d38e265409d8e99b397ab71eb3612fad0"
+
 [[package]]
 name = "serde"
-version = "1.0.110"
+version = "1.0.111"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99e7b308464d16b56eba9964e4972a3eee817760ab60d88c3f86e1fecb08204c"
+checksum = "c9124df5b40cbd380080b2cc6ab894c040a3070d995f5c9dc77e18c34a8ae37d"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.110"
+version = "1.0.111"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "818fbf6bfa9a42d3bfcaca148547aa00c7b915bec71d1757aa2d44ca68771984"
+checksum = "3f2c3ac8e6ca1e9c80b8be1023940162bf81ae3cffbb1809474152f2ce1eb250"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -5442,9 +5583,9 @@ checksum = "2579985fda508104f7587689507983eadd6a6e84dd35d6d115361f530916fa0d"
 
 [[package]]
 name = "sha2"
-version = "0.8.1"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "27044adfd2e1f077f649f59deb9490d3941d674002f7d062870a60ebe9bd47a0"
+checksum = "a256f46ea78a0c0d9ff00077504903ac881a1dafdc20da66545699e7776b3e69"
 dependencies = [
  "block-buffer",
  "digest",
@@ -5465,16 +5606,6 @@ dependencies = [
  "opaque-debug",
 ]
 
-[[package]]
-name = "shell32-sys"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ee04b46101f57121c9da2b151988283b6beb79b34f5bb29a58ee48cb695122c"
-dependencies = [
- "winapi 0.2.8",
- "winapi-build",
-]
-
 [[package]]
 name = "shlex"
 version = "0.1.1"
@@ -5538,7 +5669,7 @@ checksum = "a945ec7f7ce853e89ffa36be1e27dce9a43e82ff9093bf3461c30d5da74ed11b"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -5556,6 +5687,25 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c7cb5678e1615754284ec264d9bb5b4c27d2018577fd90ac0ceb578591ed5ee4"
 
+[[package]]
+name = "smol"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "686c634ad1873fffef6aed20f180eede424fbf3bb31802394c90fd7335a661b7"
+dependencies = [
+ "async-task 3.0.0",
+ "crossbeam",
+ "futures-io",
+ "futures-util",
+ "nix",
+ "once_cell",
+ "piper",
+ "scoped-tls-hkt",
+ "slab",
+ "socket2",
+ "wepoll-binding",
+]
+
 [[package]]
 name = "snow"
 version = "0.6.2"
@@ -5570,10 +5720,22 @@ dependencies = [
  "ring",
  "rustc_version",
  "sha2",
- "subtle 2.2.2",
+ "subtle 2.2.3",
  "x25519-dalek",
 ]
 
+[[package]]
+name = "socket2"
+version = "0.3.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "03088793f677dce356f3ccc2edb1b314ad191ab702a5de3faf49304f7e104918"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "redox_syscall",
+ "winapi 0.3.8",
+]
+
 [[package]]
 name = "soketto"
 version = "0.3.2"
@@ -5596,20 +5758,20 @@ dependencies = [
 
 [[package]]
 name = "sp-allocator"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "log",
  "sp-core",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-wasm-interface",
 ]
 
 [[package]]
 name = "sp-api"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "hash-db",
  "parity-scale-codec",
@@ -5617,87 +5779,86 @@ dependencies = [
  "sp-core",
  "sp-runtime",
  "sp-state-machine",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-version",
 ]
 
 [[package]]
 name = "sp-api-proc-macro"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "blake2-rfc",
  "proc-macro-crate",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
 name = "sp-application-crypto"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "parity-scale-codec",
  "serde",
  "sp-core",
  "sp-io",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-arithmetic"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "integer-sqrt",
  "num-traits 0.2.11",
  "parity-scale-codec",
- "primitive-types 0.7.2",
  "serde",
  "sp-debug-derive",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-authority-discovery"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "parity-scale-codec",
  "sp-api",
  "sp-application-crypto",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-authorship"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "parity-scale-codec",
  "sp-inherents",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-block-builder"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "parity-scale-codec",
  "sp-api",
  "sp-inherents",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-blockchain"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "log",
@@ -5712,8 +5873,8 @@ dependencies = [
 
 [[package]]
 name = "sp-chain-spec"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "serde",
  "serde_json",
@@ -5721,8 +5882,8 @@ dependencies = [
 
 [[package]]
 name = "sp-consensus"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "futures 0.3.5",
@@ -5736,7 +5897,7 @@ dependencies = [
  "sp-inherents",
  "sp-runtime",
  "sp-state-machine",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-utils",
  "sp-version",
  "substrate-prometheus-endpoint",
@@ -5744,8 +5905,8 @@ dependencies = [
 
 [[package]]
 name = "sp-consensus-babe"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "merlin",
  "parity-scale-codec",
@@ -5755,26 +5916,26 @@ dependencies = [
  "sp-consensus-vrf",
  "sp-inherents",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-timestamp",
 ]
 
 [[package]]
 name = "sp-consensus-vrf"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "parity-scale-codec",
  "schnorrkel",
  "sp-core",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-core"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "base58",
  "blake2-rfc",
@@ -5803,7 +5964,7 @@ dependencies = [
  "sp-debug-derive",
  "sp-externalities",
  "sp-runtime-interface",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-storage",
  "substrate-bip39",
  "tiny-bip39",
@@ -5815,8 +5976,8 @@ dependencies = [
 
 [[package]]
 name = "sp-database"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "kvdb",
  "parking_lot 0.10.2",
@@ -5824,29 +5985,29 @@ dependencies = [
 
 [[package]]
 name = "sp-debug-derive"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
 name = "sp-externalities"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "environmental",
  "parity-scale-codec",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-storage",
 ]
 
 [[package]]
 name = "sp-finality-grandpa"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "finality-grandpa",
  "log",
@@ -5856,35 +6017,35 @@ dependencies = [
  "sp-application-crypto",
  "sp-core",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-finality-tracker"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "parity-scale-codec",
  "sp-inherents",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-inherents"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "parity-scale-codec",
  "parking_lot 0.10.2",
  "sp-core",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-io"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "futures 0.3.5",
  "hash-db",
@@ -5896,15 +6057,15 @@ dependencies = [
  "sp-externalities",
  "sp-runtime-interface",
  "sp-state-machine",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-trie",
  "sp-wasm-interface",
 ]
 
 [[package]]
 name = "sp-keyring"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "lazy_static",
  "sp-core",
@@ -5914,8 +6075,8 @@ dependencies = [
 
 [[package]]
 name = "sp-offchain"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "sp-api",
  "sp-core",
@@ -5924,8 +6085,8 @@ dependencies = [
 
 [[package]]
 name = "sp-panic-handler"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "backtrace",
  "log",
@@ -5933,31 +6094,31 @@ dependencies = [
 
 [[package]]
 name = "sp-phragmen"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "parity-scale-codec",
  "serde",
  "sp-arithmetic",
  "sp-phragmen-compact",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-phragmen-compact"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
 name = "sp-rpc"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "serde",
  "sp-core",
@@ -5965,8 +6126,8 @@ dependencies = [
 
 [[package]]
 name = "sp-runtime"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "hash256-std-hasher",
  "impl-trait-for-tuples",
@@ -5981,19 +6142,19 @@ dependencies = [
  "sp-core",
  "sp-inherents",
  "sp-io",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-runtime-interface"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "parity-scale-codec",
  "primitive-types 0.7.2",
  "sp-externalities",
  "sp-runtime-interface-proc-macro",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "sp-tracing",
  "sp-wasm-interface",
  "static_assertions 1.1.0",
@@ -6001,20 +6162,20 @@ dependencies = [
 
 [[package]]
 name = "sp-runtime-interface-proc-macro"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "Inflector",
  "proc-macro-crate",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
 name = "sp-serializer"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "serde",
  "serde_json",
@@ -6022,31 +6183,31 @@ dependencies = [
 
 [[package]]
 name = "sp-session"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "parity-scale-codec",
  "sp-api",
  "sp-core",
  "sp-runtime",
  "sp-staking",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-staking"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "parity-scale-codec",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-state-machine"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "hash-db",
  "log",
@@ -6065,51 +6226,51 @@ dependencies = [
 [[package]]
 name = "sp-std"
 version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+source = "git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
 
 [[package]]
 name = "sp-std"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 
 [[package]]
 name = "sp-storage"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "impl-serde 0.2.3",
  "ref-cast",
  "serde",
  "sp-debug-derive",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-timestamp"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "impl-trait-for-tuples",
  "parity-scale-codec",
  "sp-api",
  "sp-inherents",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "wasm-timer",
 ]
 
 [[package]]
 name = "sp-tracing"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "tracing",
 ]
 
 [[package]]
 name = "sp-transaction-pool"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "derive_more",
  "futures 0.3.5",
@@ -6123,22 +6284,22 @@ dependencies = [
 
 [[package]]
 name = "sp-trie"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "hash-db",
  "memory-db",
  "parity-scale-codec",
  "sp-core",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "trie-db",
  "trie-root",
 ]
 
 [[package]]
 name = "sp-utils"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "futures 0.3.5",
  "futures-core",
@@ -6148,24 +6309,24 @@ dependencies = [
 
 [[package]]
 name = "sp-version"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "impl-serde 0.2.3",
  "parity-scale-codec",
  "serde",
  "sp-runtime",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
 ]
 
 [[package]]
 name = "sp-wasm-interface"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "impl-trait-for-tuples",
  "parity-scale-codec",
- "sp-std 2.0.0-alpha.8 (git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8)",
+ "sp-std 2.0.0-rc2",
  "wasmi",
 ]
 
@@ -6238,7 +6399,7 @@ dependencies = [
  "proc-macro-error",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -6259,7 +6420,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -6276,21 +6437,21 @@ dependencies = [
 
 [[package]]
 name = "substrate-build-script-utils"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
  "platforms",
 ]
 
 [[package]]
 name = "substrate-prometheus-endpoint"
-version = "0.8.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "0.8.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 dependencies = [
- "async-std",
+ "async-std 1.6.0",
  "derive_more",
  "futures-util",
- "hyper 0.13.5",
+ "hyper 0.13.6",
  "log",
  "prometheus",
  "tokio 0.2.21",
@@ -6298,13 +6459,13 @@ dependencies = [
 
 [[package]]
 name = "substrate-test-utils"
-version = "2.0.0-alpha.8"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+version = "2.0.0-rc2"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 
 [[package]]
 name = "substrate-wasm-builder-runner"
 version = "1.0.6"
-source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-alpha.darwinia.8#7e9a2ae78d27cc56e053fbec3b34a1a258b89561"
+source = "git+https://github.com/darwinia-network/substrate.git?tag=v2.0.0-rc.darwinia.1#45b9f0a9cbf901abaa9f1fca5fe8baeed029133d"
 
 [[package]]
 name = "subtle"
@@ -6314,9 +6475,9 @@ checksum = "2d67a5a62ba6e01cb2192ff309324cb4875d0c451d55fe2319433abe7a05a8ee"
 
 [[package]]
 name = "subtle"
-version = "2.2.2"
+version = "2.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c65d530b10ccaeac294f349038a597e435b18fb456aadd0840a623f83b9e941"
+checksum = "502d53007c02d7605a05df1c1a73ee436952781653da5d0bf57ad608f66932c1"
 
 [[package]]
 name = "syn"
@@ -6331,9 +6492,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.23"
+version = "1.0.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95b5f192649e48a5302a13f2feb224df883b98933222369e4b3b0fe2a5447269"
+checksum = "93a56fabc59dce20fe48b6c832cc249c713e7ed88fa28b0ee0a3bfcaae5fe4e2"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
@@ -6348,7 +6509,7 @@ checksum = "7be3539f6c128a931cf19dcee741c1af532c7fd387baa739c03dd2e96479338a"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -6368,7 +6529,7 @@ checksum = "67656ea1dc1b41b1451851562ea232ec2e5a80242139f7e679ceccfb5d61f545"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
  "unicode-xid 0.2.0",
 ]
 
@@ -6442,7 +6603,7 @@ checksum = "893582086c2f98cde18f906265a65b5030a074b1046c674ae898be6519a7f479"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -6509,9 +6670,9 @@ dependencies = [
 
 [[package]]
 name = "tinytemplate"
-version = "1.0.4"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "45e4bc5ac99433e0dcb8b9f309dd271a165ae37dde129b9e0ce1bfdd8bfe4891"
+checksum = "6d3dc76004a03cec1c5932bca4cdc2e39aaa798e3f82363dd94f9adf6098c12f"
 dependencies = [
  "serde",
  "serde_json",
@@ -6601,7 +6762,7 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fb2d1b8f4548dbf5e1f7818512e9c406860678f29c300cdf0ebac72d1a3a1671"
 dependencies = [
- "crossbeam-utils",
+ "crossbeam-utils 0.7.2",
  "futures 0.1.29",
 ]
 
@@ -6644,7 +6805,7 @@ version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09bc590ec4ba8ba87652da2068d150dcada2cfa2e07faae270a5e0409aa51351"
 dependencies = [
- "crossbeam-utils",
+ "crossbeam-utils 0.7.2",
  "futures 0.1.29",
  "lazy_static",
  "log",
@@ -6712,7 +6873,7 @@ checksum = "df720b6581784c118f0eb4310796b12b1d242a7eb95f716a8367855325c25f89"
 dependencies = [
  "crossbeam-deque",
  "crossbeam-queue",
- "crossbeam-utils",
+ "crossbeam-utils 0.7.2",
  "futures 0.1.29",
  "lazy_static",
  "log",
@@ -6727,7 +6888,7 @@ version = "0.2.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "93044f2d313c95ff1cb7809ce9a7a05735b012288a888b62d4434fd58c94f296"
 dependencies = [
- "crossbeam-utils",
+ "crossbeam-utils 0.7.2",
  "futures 0.1.29",
  "slab",
  "tokio-executor 0.1.10",
@@ -6814,7 +6975,7 @@ checksum = "99bbad0de3fd923c9c3232ead88510b783e5a4d16a6154adffa3d53308de984c"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
 ]
 
 [[package]]
@@ -7016,9 +7177,9 @@ dependencies = [
 
 [[package]]
 name = "vcpkg"
-version = "0.2.8"
+version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fc439f2794e98976c88a2a2dafce96b930fe8010b0a256b3c2199a773933168"
+checksum = "55d1e41d56121e07f1e223db0a4def204e45c85425f6a16d462fd07c8d10d74c"
 
 [[package]]
 name = "vec_map"
@@ -7028,9 +7189,9 @@ checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
 
 [[package]]
 name = "version_check"
-version = "0.9.1"
+version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "078775d0255232fb988e6fccf26ddc9d1ac274299aaedcedce21c6f72cc533ce"
+checksum = "b5a972e5669d67ba988ce3dc826706fb0a8b01471c088cb0b6110b805cc36aed"
 
 [[package]]
 name = "void"
@@ -7078,9 +7239,9 @@ checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e3c7d40d09cdbf0f4895ae58cf57d92e1e57a9dd8ed2e8390514b54a47cc5551"
+checksum = "4c2dc4aa152834bc334f506c1a06b866416a8b6697d5c9f75b9a689c8486def0"
 dependencies = [
  "cfg-if",
  "wasm-bindgen-macro",
@@ -7088,24 +7249,24 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3972e137ebf830900db522d6c8fd74d1900dcfc733462e9a12e942b00b4ac94"
+checksum = "ded84f06e0ed21499f6184df0e0cb3494727b0c5da89534e0fcc55c51d812101"
 dependencies = [
  "bumpalo",
  "lazy_static",
  "log",
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-futures"
-version = "0.4.12"
+version = "0.4.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a369c5e1dfb7569e14d62af4da642a3cbc2f9a3652fe586e26ac22222aa4b04"
+checksum = "64487204d863f109eb77e8462189d111f27cb5712cc9fdb3461297a76963a2f6"
 dependencies = [
  "cfg-if",
  "js-sys",
@@ -7115,9 +7276,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2cd85aa2c579e8892442954685f0d801f9129de24fa2136b2c6a539c76b65776"
+checksum = "838e423688dac18d73e31edce74ddfac468e37b1506ad163ffaf0a46f703ffe3"
 dependencies = [
  "quote 1.0.6",
  "wasm-bindgen-macro-support",
@@ -7125,22 +7286,22 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8eb197bd3a47553334907ffd2f16507b4f4f01bbec3ac921a7719e0decdfe72a"
+checksum = "3156052d8ec77142051a533cdd686cba889537b213f948cd1d20869926e68e92"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a91c2916119c17a8e316507afaaa2dd94b47646048014bbdf6bef098c1bb58ad"
+checksum = "c9ba19973a58daf4db6f352eda73dc0e289493cd29fb2632eb172085b6521acd"
 
 [[package]]
 name = "wasm-timer"
@@ -7152,7 +7313,7 @@ dependencies = [
  "js-sys",
  "parking_lot 0.9.0",
  "pin-utils",
- "send_wrapper",
+ "send_wrapper 0.2.0",
  "wasm-bindgen",
  "wasm-bindgen-futures",
  "web-sys",
@@ -7183,9 +7344,9 @@ dependencies = [
 
 [[package]]
 name = "web-sys"
-version = "0.3.39"
+version = "0.3.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8bc359e5dd3b46cb9687a051d50a2fdd228e4ba7cf6fcf861a5365c3d671a642"
+checksum = "7b72fe77fd39e4bd3eaa4412fd299a0be6b3dfe9d2597e2f1c20beb968f41d17"
 dependencies = [
  "js-sys",
  "wasm-bindgen",
@@ -7193,9 +7354,9 @@ dependencies = [
 
 [[package]]
 name = "webpki"
-version = "0.21.2"
+version = "0.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1f50e1972865d6b1adb54167d1c8ed48606004c2c9d0ea5f1eeb34d95e863ef"
+checksum = "ab146130f5f790d45f82aeeb09e55a256573373ec64409fc19a6fb82fb1032ae"
 dependencies = [
  "ring",
  "untrusted",
@@ -7219,6 +7380,25 @@ dependencies = [
  "webpki",
 ]
 
+[[package]]
+name = "wepoll-binding"
+version = "2.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "374fff4ff9701ff8b6ad0d14bacd3156c44063632d8c136186ff5967d48999a7"
+dependencies = [
+ "bitflags",
+ "wepoll-sys",
+]
+
+[[package]]
+name = "wepoll-sys"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9082a777aed991f6769e2b654aa0cb29f1c3d615daf009829b07b66c7aff6a24"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "which"
 version = "3.1.1"
@@ -7310,12 +7490,6 @@ dependencies = [
  "zeroize",
 ]
 
-[[package]]
-name = "xdg"
-version = "2.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d089681aa106a86fade1b0128fb5daf07d5867a509ab036d99988dec80429a57"
-
 [[package]]
 name = "yamux"
 version = "0.4.5"
@@ -7347,6 +7521,6 @@ checksum = "de251eec69fc7c1bc3923403d18ececb929380e016afe103da75f396704f8ca2"
 dependencies = [
  "proc-macro2",
  "quote 1.0.6",
- "syn 1.0.23",
+ "syn 1.0.30",
  "synstructure",
 ]
diff --git a/bin/node-template/node/Cargo.toml b/bin/node-template/node/Cargo.toml
index 94882cfc73..b59bd70ea1 100644
--- a/bin/node-template/node/Cargo.toml
+++ b/bin/node-template/node/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "node-template"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Anonymous"]
 description = "Darwinia Node template"
 edition = "2018"
@@ -27,36 +27,36 @@ darwinia-eth-relay = { path = "../../../frame/bridge/eth/relay" }
 darwinia-staking = { path = "../../../frame/staking" }
 darwinia-staking-rpc = { path = "../../../frame/staking/rpc" }
 # substrate
-frame-benchmarking-cli = { optional = true, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-im-online = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sc-basic-authorship = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sc-cli = { optional = true, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sc-client-api = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sc-consensus = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sc-consensus-babe = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sc-executor = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sc-finality-grandpa = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sc-finality-grandpa-rpc = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sc-network = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sc-rpc = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sc-service = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sc-transaction-pool = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-api = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-authority-discovery = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-blockchain = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-consensus = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-consensus-babe = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-inherents = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-finality-grandpa = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-transaction-pool = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+frame-benchmarking-cli = { optional = true, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-im-online = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sc-basic-authorship = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sc-cli = { optional = true, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sc-client-api = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sc-consensus = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sc-consensus-babe = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sc-executor = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sc-finality-grandpa = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sc-finality-grandpa-rpc = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sc-network = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sc-rpc = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sc-service = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sc-transaction-pool = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-api = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-authority-discovery = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-blockchain = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-consensus = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-consensus-babe = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-inherents = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-finality-grandpa = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-transaction-pool = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [build-dependencies]
 # substrate
 structopt = { version = "0.3.14", optional = true }
-frame-benchmarking-cli = { optional = true, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-substrate-build-script-utils = { optional = true, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+frame-benchmarking-cli = { optional = true, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+substrate-build-script-utils = { optional = true, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = [
diff --git a/bin/node-template/node/src/service.rs b/bin/node-template/node/src/service.rs
index 2edb4e89eb..40b803aab7 100644
--- a/bin/node-template/node/src/service.rs
+++ b/bin/node-template/node/src/service.rs
@@ -145,8 +145,11 @@ pub fn new_full(config: Configuration) -> Result<impl AbstractService, ServiceEr
 		.build()?;
 
 	if let sc_service::config::Role::Authority { .. } = &role {
-		let proposer =
-			sc_basic_authorship::ProposerFactory::new(service.client(), service.transaction_pool());
+		let proposer = sc_basic_authorship::ProposerFactory::new(
+			service.client(),
+			service.transaction_pool(),
+			service.prometheus_registry().as_ref(),
+		);
 
 		let client = service.client();
 		let select_chain = service
diff --git a/bin/node-template/runtime/Cargo.toml b/bin/node-template/runtime/Cargo.toml
index 107ad312d0..9fbeaed21e 100644
--- a/bin/node-template/runtime/Cargo.toml
+++ b/bin/node-template/runtime/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "node-template-runtime"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Anonymous"]
 edition = "2018"
 license = "Unlicense"
@@ -28,42 +28,42 @@ darwinia-staking-rpc-runtime-api = { default-features = false, path = "../../../
 darwinia-support = { default-features = false, path = "../../../frame/support" }
 darwinia-treasury = { default-features = false, path = "../../../frame/treasury" }
 # substrate
-frame-benchmarking = { default-features = false, optional = true, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-executive = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-authority-discovery = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-authorship = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-babe = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-collective = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-finality-tracker = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-grandpa = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-im-online = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-offences = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-randomness-collective-flip = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-session = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-sudo = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-timestamp = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-transaction-payment = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-api = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-application-crypto = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-authority-discovery = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-block-builder = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-consensus-babe = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-core = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-inherents = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-io = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-offchain = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-session = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-staking = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-transaction-pool = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-version = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+frame-benchmarking = { default-features = false, optional = true, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-executive = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-authority-discovery = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-authorship = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-babe = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-collective = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-finality-tracker = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-grandpa = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-im-online = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-offences = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-randomness-collective-flip = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-session = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-sudo = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-timestamp = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-transaction-payment = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-api = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-application-crypto = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-authority-discovery = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-block-builder = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-consensus-babe = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-core = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-inherents = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-io = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-offchain = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-session = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-staking = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-transaction-pool = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-version = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [build-dependencies]
 # substrate
-wasm-builder-runner = { package = "substrate-wasm-builder-runner", git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+wasm-builder-runner = { package = "substrate-wasm-builder-runner", git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
diff --git a/bin/node-template/runtime/src/lib.rs b/bin/node-template/runtime/src/lib.rs
index 07bb77be4d..f4db36fdee 100644
--- a/bin/node-template/runtime/src/lib.rs
+++ b/bin/node-template/runtime/src/lib.rs
@@ -11,17 +11,9 @@ include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));
 pub mod impls {
 	//! Some configurable implementations as associated type for the substrate runtime.
 
-	// --- core ---
-	use core::num::NonZeroI128;
 	// --- substrate ---
-	use frame_support::{
-		traits::{Currency, Get, Imbalance, OnUnbalanced},
-		weights::Weight,
-	};
-	use sp_runtime::{
-		traits::{Convert, Saturating},
-		Fixed128, Perquintill,
-	};
+	use frame_support::traits::{Currency, Get, Imbalance, OnUnbalanced};
+	use sp_runtime::{traits::Convert, Fixed128, FixedPointNumber, Perquintill};
 	// --- darwinia ---
 	use crate::{primitives::*, *};
 
@@ -65,17 +57,6 @@ pub mod impls {
 		}
 	}
 
-	/// Convert from weight to balance via a simple coefficient multiplication
-	/// The associated type C encapsulates a constant in units of balance per weight
-	pub struct LinearWeightToFee<C>(sp_std::marker::PhantomData<C>);
-	impl<C: Get<Balance>> Convert<Weight, Balance> for LinearWeightToFee<C> {
-		fn convert(w: Weight) -> Balance {
-			// setting this to zero will disable the weight fee.
-			let coefficient = C::get();
-			Balance::from(w).saturating_mul(coefficient)
-		}
-	}
-
 	/// Update the given multiplier based on the following formula
 	///
 	///   diff = (previous_block_weight - target_weight)/max_weight
@@ -89,25 +70,21 @@ pub mod impls {
 	impl<T: Get<Perquintill>> Convert<Fixed128, Fixed128> for TargetedFeeAdjustment<T> {
 		fn convert(multiplier: Fixed128) -> Fixed128 {
 			let max_weight = MaximumBlockWeight::get();
-			let block_weight = System::all_extrinsics_weight().total().min(max_weight);
+			let block_weight = System::block_weight().total().min(max_weight);
 			let target_weight = (T::get() * max_weight) as u128;
 			let block_weight = block_weight as u128;
 
 			// determines if the first_term is positive
 			let positive = block_weight >= target_weight;
 			let diff_abs = block_weight.max(target_weight) - block_weight.min(target_weight);
-			// safe, diff_abs cannot exceed u64 and it can always be computed safely even with the lossy
-			// `Fixed128::from_rational`.
-			let diff = Fixed128::from_rational(
-				diff_abs as i128,
-				NonZeroI128::new(max_weight.max(1) as i128).unwrap(),
-			);
+			// safe, diff_abs cannot exceed u64.
+			let diff = Fixed128::saturating_from_rational(diff_abs, max_weight.max(1));
 			let diff_squared = diff.saturating_mul(diff);
 
 			// 0.00004 = 4/100_000 = 40_000/10^9
-			let v = Fixed128::from_rational(4, NonZeroI128::new(100_000).unwrap());
+			let v = Fixed128::saturating_from_rational(4, 100_000);
 			// 0.00004^2 = 16/10^10 Taking the future /2 into account... 8/10^10
-			let v_squared_2 = Fixed128::from_rational(8, NonZeroI128::new(10_000_000_000).unwrap());
+			let v_squared_2 = Fixed128::saturating_from_rational(8, 10_000_000_000u64);
 
 			let first_term = v.saturating_mul(diff);
 			let second_term = v_squared_2.saturating_mul(diff_squared);
@@ -127,7 +104,7 @@ pub mod impls {
 					// multiplier. While at -1, it means that the network is so un-congested that all
 					// transactions have no weight fee. We stop here and only increase if the network
 					// became more busy.
-					.max(Fixed128::from_natural(-1))
+					.max(Fixed128::saturating_from_integer(-1))
 			}
 		}
 	}
@@ -310,7 +287,7 @@ use frame_support::{
 	traits::{KeyOwnerProofSystem, LockIdentifier, Randomness},
 	weights::{
 		constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},
-		Weight,
+		IdentityFee, Weight,
 	},
 };
 use pallet_grandpa::{
@@ -329,6 +306,7 @@ use sp_runtime::{
 	create_runtime_str, generic, impl_opaque_keys,
 	traits::{
 		BlakeTwo256, Block as BlockT, IdentityLookup, NumberFor, OpaqueKeys, SaturatedConversion,
+		Saturating,
 	},
 	transaction_validity::{TransactionPriority, TransactionSource, TransactionValidity},
 	ApplyExtrinsicResult, ModuleId, Perbill, Percent, Permill, Perquintill, RuntimeDebug,
@@ -395,9 +373,12 @@ pub fn native_version() -> NativeVersion {
 }
 
 parameter_types! {
-	pub const BlockHashCount: BlockNumber = 250;
+	pub const BlockHashCount: BlockNumber = 2400;
 	/// We allow for 2 seconds of compute with a 6 second average block time.
 	pub const MaximumBlockWeight: Weight = 2 * WEIGHT_PER_SECOND;
+	/// Assume 10% of weight for average on_initialize calls.
+	pub const MaximumExtrinsicWeight: Weight = AvailableBlockRatio::get()
+		.saturating_sub(Perbill::from_percent(10)) * MaximumBlockWeight::get();
 	pub const MaximumBlockLength: u32 = 5 * 1024 * 1024;
 	pub const AvailableBlockRatio: Perbill = Perbill::from_percent(75);
 	pub const Version: RuntimeVersion = VERSION;
@@ -418,6 +399,7 @@ impl frame_system::Trait for Runtime {
 	type DbWeight = RocksDbWeight;
 	type BlockExecutionWeight = BlockExecutionWeight;
 	type ExtrinsicBaseWeight = ExtrinsicBaseWeight;
+	type MaximumExtrinsicWeight = MaximumExtrinsicWeight;
 	type MaximumBlockLength = MaximumBlockLength;
 	type AvailableBlockRatio = AvailableBlockRatio;
 	type Version = Version;
@@ -449,9 +431,6 @@ impl pallet_timestamp::Trait for Runtime {
 
 parameter_types! {
 	pub const TransactionByteFee: Balance = 10 * MICRO;
-	// In the Substrate node, a weight of 10_000_000 (smallest non-zero weight)
-	// is mapped to 10_000_000 units of fees, hence:
-	pub const WeightFeeCoefficient: Balance = 1;
 	// for a sane configuration, this should always be less than `AvailableBlockRatio`.
 	pub const TargetBlockFullness: Perquintill = Perquintill::from_percent(25);
 }
@@ -459,7 +438,7 @@ impl pallet_transaction_payment::Trait for Runtime {
 	type Currency = Ring;
 	type OnTransactionPayment = DealWithFees;
 	type TransactionByteFee = TransactionByteFee;
-	type WeightToFee = LinearWeightToFee<WeightFeeCoefficient>;
+	type WeightToFee = IdentityFee<Balance>;
 	type FeeMultiplierUpdate = TargetedFeeAdjustment<TargetBlockFullness>;
 }
 
@@ -473,10 +452,14 @@ impl pallet_authorship::Trait for Runtime {
 	type EventHandler = (Staking, ImOnline);
 }
 
+parameter_types! {
+	pub const OffencesWeightSoftLimit: Weight = Perbill::from_percent(60) * MaximumBlockWeight::get();
+}
 impl pallet_offences::Trait for Runtime {
 	type Event = Event;
 	type IdentificationTuple = pallet_session::historical::IdentificationTuple<Self>;
 	type OnOffenceHandler = Staking;
+	type WeightSoftLimit = OffencesWeightSoftLimit;
 }
 
 impl pallet_session::historical::Trait for Runtime {
@@ -647,8 +630,8 @@ parameter_types! {
 	pub const TermDuration: BlockNumber = 24 * HOURS;
 }
 impl darwinia_elections_phragmen::Trait for Runtime {
-	type ModuleId = ElectionsPhragmenModuleId;
 	type Event = Event;
+	type ModuleId = ElectionsPhragmenModuleId;
 	type Currency = Ring;
 	type ChangeMembers = Council;
 	// NOTE: this implies that council's genesis members cannot be set directly and must come from
diff --git a/frame/balances/Cargo.toml b/frame/balances/Cargo.toml
index a446605ca7..e2acc8fd71 100644
--- a/frame/balances/Cargo.toml
+++ b/frame/balances/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "darwinia-balances"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "FRAME pallet to manage RING"
 edition = "2018"
@@ -16,17 +16,17 @@ serde = { version = "1.0.106", optional = true }
 darwinia-balances-rpc-runtime-api = { default-features = false, path = "./rpc/runtime-api" }
 darwinia-support = { default-features = false, path = "../support" }
 # substrate
-frame-benchmarking = { optional = true, default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-io = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+frame-benchmarking = { optional = true, default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [dev-dependencies]
 # substrate
-pallet-transaction-payment = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+pallet-transaction-payment = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-io = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
@@ -42,7 +42,6 @@ std = [
 	"frame-benchmarking/std",
 	"frame-support/std",
 	"frame-system/std",
-	"sp-io/std",
 	"sp-runtime/std",
 	"sp-std/std",
 ]
diff --git a/frame/balances/rpc/Cargo.toml b/frame/balances/rpc/Cargo.toml
index 51e89a018d..f26c9fcf8c 100644
--- a/frame/balances/rpc/Cargo.toml
+++ b/frame/balances/rpc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "darwinia-balances-rpc"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "Node-specific RPC methods for interaction with balances."
 edition = "2018"
@@ -17,6 +17,6 @@ jsonrpc-derive = "14.0.3"
 # darwinia
 darwinia-balances-rpc-runtime-api = { path = "./runtime-api" }
 # substrate
-sp-api = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-blockchain = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+sp-api = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-blockchain = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
diff --git a/frame/balances/rpc/runtime-api/Cargo.toml b/frame/balances/rpc/runtime-api/Cargo.toml
index 8ad22750b7..2245ffac37 100644
--- a/frame/balances/rpc/runtime-api/Cargo.toml
+++ b/frame/balances/rpc/runtime-api/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "darwinia-balances-rpc-runtime-api"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "Runtime API definition required by balances RPC extensions."
 edition = "2018"
@@ -15,8 +15,8 @@ serde = { version = "1.0.106", optional = true, features = ["derive"] }
 # darwinia
 darwinia-support = { default-features = false, path = "../../../support" }
 # substrate
-sp-api = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+sp-api = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
diff --git a/frame/balances/src/lib.rs b/frame/balances/src/lib.rs
index efdca6a76a..ef12f1d11f 100644
--- a/frame/balances/src/lib.rs
+++ b/frame/balances/src/lib.rs
@@ -803,6 +803,7 @@ impl<T: Subtrait<I>, I: Instance> frame_system::Trait for ElevatedTrait<T, I> {
 	type DbWeight = T::DbWeight;
 	type BlockExecutionWeight = ();
 	type ExtrinsicBaseWeight = ();
+	type MaximumExtrinsicWeight = T::MaximumBlockWeight;
 	type MaximumBlockLength = T::MaximumBlockLength;
 	type AvailableBlockRatio = T::AvailableBlockRatio;
 	type Version = T::Version;
diff --git a/frame/balances/src/tests.rs b/frame/balances/src/tests.rs
index af0b48271e..058c3fd9ec 100644
--- a/frame/balances/src/tests.rs
+++ b/frame/balances/src/tests.rs
@@ -21,10 +21,7 @@ macro_rules! decl_tests {
 		};
 		use frame_system::RawOrigin;
 		use pallet_transaction_payment::ChargeTransactionPayment;
-		use sp_runtime::{
-			traits::{BadOrigin, SignedExtension},
-			Fixed128,
-		};
+		use sp_runtime::{FixedPointNumber, Fixed128, traits::{SignedExtension, BadOrigin}};
 
 		pub type System = frame_system::Module<$test>;
 
@@ -190,7 +187,7 @@ macro_rules! decl_tests {
 				.monied(true)
 				.build()
 				.execute_with(|| {
-					pallet_transaction_payment::NextFeeMultiplier::put(Fixed128::from_natural(1));
+					pallet_transaction_payment::NextFeeMultiplier::put(Fixed128::saturating_from_integer(1));
 					Ring::set_lock(
 						ID_1,
 						&1,
diff --git a/frame/balances/src/tests_local.rs b/frame/balances/src/tests_local.rs
index eda1238695..df9e728029 100644
--- a/frame/balances/src/tests_local.rs
+++ b/frame/balances/src/tests_local.rs
@@ -8,15 +8,11 @@ use codec::{Decode, Encode};
 use frame_support::{
 	impl_outer_origin, parameter_types,
 	traits::{Get, StorageMapShim},
-	weights::{DispatchInfo, Weight},
+	weights::{DispatchInfo, IdentityFee, Weight},
 };
 use frame_system as system;
 use sp_core::H256;
-use sp_runtime::{
-	testing::Header,
-	traits::{ConvertInto, IdentityLookup},
-	Perbill, RuntimeDebug,
-};
+use sp_runtime::{testing::Header, traits::IdentityLookup, Perbill, RuntimeDebug};
 // --- darwinia ---
 use crate::{tests::*, *};
 
@@ -82,6 +78,7 @@ impl frame_system::Trait for Test {
 	type DbWeight = ();
 	type BlockExecutionWeight = ();
 	type ExtrinsicBaseWeight = ();
+	type MaximumExtrinsicWeight = MaximumBlockWeight;
 	type MaximumBlockLength = MaximumBlockLength;
 	type AvailableBlockRatio = AvailableBlockRatio;
 	type Version = ();
@@ -97,7 +94,7 @@ impl pallet_transaction_payment::Trait for Test {
 	type Currency = Ring;
 	type OnTransactionPayment = ();
 	type TransactionByteFee = TransactionByteFee;
-	type WeightToFee = ConvertInto;
+	type WeightToFee = IdentityFee<u64>;
 	type FeeMultiplierUpdate = ();
 }
 impl Trait<RingInstance> for Test {
diff --git a/frame/bridge/eth/backing/Cargo.toml b/frame/bridge/eth/backing/Cargo.toml
index 986d070f6c..ccbb7605d8 100644
--- a/frame/bridge/eth/backing/Cargo.toml
+++ b/frame/bridge/eth/backing/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "darwinia-eth-backing"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "FRAME pallet to backing Ethereum assets"
 edition = "2018"
@@ -20,11 +20,11 @@ eth-primitives = { default-features = false, path = "../../../../primitives/eth-
 # github
 ethabi = { default-features = false, git = "https://github.com/darwinia-network/ethabi.git", branch = "with_no_std" }
 # substrate
-frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-core = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-core = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [dev-dependencies]
 # darwinia
@@ -34,10 +34,10 @@ eth-primitives = { features = ["easy-testing"], path = "../../../../primitives/e
 # github
 rlp = { package = "rlp", git = "https://github.com/darwinia-network/parity-common.git" }
 # substrate
-pallet-session = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-timestamp = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-io = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-staking = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+pallet-session = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-timestamp = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-io = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-staking = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
diff --git a/frame/bridge/eth/backing/src/mock.rs b/frame/bridge/eth/backing/src/mock.rs
index c148d2c6a0..9988487f7d 100644
--- a/frame/bridge/eth/backing/src/mock.rs
+++ b/frame/bridge/eth/backing/src/mock.rs
@@ -113,6 +113,7 @@ impl frame_system::Trait for Test {
 	type DbWeight = ();
 	type BlockExecutionWeight = ();
 	type ExtrinsicBaseWeight = ();
+	type MaximumExtrinsicWeight = MaximumBlockWeight;
 	type MaximumBlockLength = MaximumBlockLength;
 	type AvailableBlockRatio = AvailableBlockRatio;
 	type Version = ();
diff --git a/frame/bridge/eth/offchain/Cargo.toml b/frame/bridge/eth/offchain/Cargo.toml
index c6fd5dddf2..23ff27a81a 100644
--- a/frame/bridge/eth/offchain/Cargo.toml
+++ b/frame/bridge/eth/offchain/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "darwinia-eth-offchain"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "FRAME pallet to relay Ethereum header automactically"
 edition = "2018"
@@ -19,11 +19,11 @@ eth-primitives = { default-features = false, path = "../../../../primitives/eth-
 # github
 rlp = { default-features = false, git = "https://github.com/darwinia-network/parity-common.git" }
 # substrate
-frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-core = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-core = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [dev-dependencies]
 # crates
@@ -32,8 +32,8 @@ serde_json = { version = "1.0.51" }
 darwinia-balances = { path = "../../../../frame/balances" }
 eth-primitives = { features = ["easy-testing"], path = "../../../../primitives/eth-primitives" }
 # substrate
-sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-io = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-io = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
diff --git a/frame/bridge/eth/offchain/src/mock.rs b/frame/bridge/eth/offchain/src/mock.rs
index e74ba9792a..26874b633b 100644
--- a/frame/bridge/eth/offchain/src/mock.rs
+++ b/frame/bridge/eth/offchain/src/mock.rs
@@ -83,6 +83,7 @@ impl frame_system::Trait for Test {
 	type DbWeight = ();
 	type BlockExecutionWeight = ();
 	type ExtrinsicBaseWeight = ();
+	type MaximumExtrinsicWeight = MaximumBlockWeight;
 	type MaximumBlockLength = MaximumBlockLength;
 	type AvailableBlockRatio = AvailableBlockRatio;
 	type Version = ();
diff --git a/frame/bridge/eth/relay/Cargo.toml b/frame/bridge/eth/relay/Cargo.toml
index f831e93878..b0a2b8d104 100644
--- a/frame/bridge/eth/relay/Cargo.toml
+++ b/frame/bridge/eth/relay/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "darwinia-eth-relay"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "FRAME pallet to relay Ethereum headers"
 edition = "2018"
@@ -24,18 +24,18 @@ merkle-patricia-trie = { default-features = false, path = "../../../../primitive
 ethereum-types = { default-features = false, git = "https://github.com/darwinia-network/parity-common.git" }
 rlp = { default-features = false, git = "https://github.com/darwinia-network/parity-common.git" }
 # substrate
-frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-io = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-io = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [dev-dependencies]
 # darwinia
 darwinia-balances = { path = "../../../../frame/balances" }
 eth-primitives = { features = ["easy-testing"], path = "../../../../primitives/eth-primitives" }
 # substrate
-sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
diff --git a/frame/bridge/eth/relay/src/mock.rs b/frame/bridge/eth/relay/src/mock.rs
index cacc6d0d77..befdd44759 100644
--- a/frame/bridge/eth/relay/src/mock.rs
+++ b/frame/bridge/eth/relay/src/mock.rs
@@ -204,6 +204,7 @@ impl frame_system::Trait for Test {
 	type DbWeight = ();
 	type BlockExecutionWeight = ();
 	type ExtrinsicBaseWeight = ();
+	type MaximumExtrinsicWeight = MaximumBlockWeight;
 	type MaximumBlockLength = MaximumBlockLength;
 	type AvailableBlockRatio = AvailableBlockRatio;
 	type Version = ();
diff --git a/frame/claims/Cargo.toml b/frame/claims/Cargo.toml
index 3984373806..bc0cb5333d 100644
--- a/frame/claims/Cargo.toml
+++ b/frame/claims/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "darwinia-claims"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "FRAME to claim airdrop"
 edition = "2018"
@@ -17,11 +17,11 @@ serde_json = { version = "1.0.51", optional = true }
 array-bytes = { default-features = false, path = "../../primitives/array-bytes" }
 darwinia-support = { default-features = false, path = "../support" }
 # substrate
-frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-io = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-io = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [dev-dependencies]
 # crates
@@ -30,7 +30,7 @@ tiny-keccak = { version = "1.5.0" }
 # darwinia
 darwinia-balances = { path = "../balances" }
 # substrate
-sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
diff --git a/frame/claims/src/lib.rs b/frame/claims/src/lib.rs
index 7fe27c1152..49baa8ff1b 100644
--- a/frame/claims/src/lib.rs
+++ b/frame/claims/src/lib.rs
@@ -490,6 +490,7 @@ mod tests {
 		type DbWeight = ();
 		type BlockExecutionWeight = ();
 		type ExtrinsicBaseWeight = ();
+		type MaximumExtrinsicWeight = MaximumBlockWeight;
 		type MaximumBlockLength = MaximumBlockLength;
 		type AvailableBlockRatio = AvailableBlockRatio;
 		type Version = ();
diff --git a/frame/elections-phragmen/Cargo.toml b/frame/elections-phragmen/Cargo.toml
index fbaf179c66..a10c6232a5 100644
--- a/frame/elections-phragmen/Cargo.toml
+++ b/frame/elections-phragmen/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "darwinia-elections-phragmen"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "FRAME election pallet for PHRAGMEN"
 edition = "2018"
@@ -15,11 +15,11 @@ serde = { version = "1.0.106", optional = true }
 # darwinia
 darwinia-support = { default-features = false, path = "../support" }
 # substrate
-frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-phragmen = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-phragmen = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [dev-dependencies]
 # crates
@@ -27,9 +27,9 @@ hex-literal = { version = "0.2.1" }
 # darwinia
 darwinia-balances = { path = "../balances" }
 # substrate
-sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-io = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-substrate-test-utils = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-io = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+substrate-test-utils = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
diff --git a/frame/elections-phragmen/src/lib.rs b/frame/elections-phragmen/src/lib.rs
index 01e3ec7d88..5d8dc8c33b 100644
--- a/frame/elections-phragmen/src/lib.rs
+++ b/frame/elections-phragmen/src/lib.rs
@@ -185,6 +185,8 @@ decl_storage! {
 		pub ElectionRounds get(fn election_rounds): u32 = Zero::zero();
 
 		/// Votes and locked stake of a particular voter.
+		///
+		/// TWOX-NOTE: SAFE as `AccountId` is a crypto hash
 		pub Voting get(fn voting): map hasher(twox_64_concat) T::AccountId => (BalanceOf<T>, Vec<T::AccountId>);
 
 		/// The present candidate list. Sorted based on account-id. A current member or runner-up
@@ -1122,6 +1124,7 @@ mod tests {
 		type DbWeight = ();
 		type BlockExecutionWeight = ();
 		type ExtrinsicBaseWeight = ();
+		type MaximumExtrinsicWeight = MaximumBlockWeight;
 		type MaximumBlockLength = MaximumBlockLength;
 		type AvailableBlockRatio = AvailableBlockRatio;
 		type Version = ();
diff --git a/frame/header-mmr/Cargo.toml b/frame/header-mmr/Cargo.toml
index 1b86cb31fc..d9f2520ba5 100644
--- a/frame/header-mmr/Cargo.toml
+++ b/frame/header-mmr/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "darwinia-header-mmr"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "Pallet for logging MMR into header digest"
 edition = "2018"
@@ -15,17 +15,17 @@ serde = { version = "1.0.106", optional = true }
 # github
 merkle-mountain-range = { package = "ckb-merkle-mountain-range", default-features = false, git = "https://github.com/nervosnetwork/merkle-mountain-range.git" }
 # substrate
-frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [dev-dependencies]
 # crates
 serde_json = { version = "1.0.51" }
 # substrate
-sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-io = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-io = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
diff --git a/frame/header-mmr/src/mock.rs b/frame/header-mmr/src/mock.rs
index ea97595dfd..1d0016de0e 100644
--- a/frame/header-mmr/src/mock.rs
+++ b/frame/header-mmr/src/mock.rs
@@ -49,6 +49,7 @@ impl frame_system::Trait for Test {
 	type DbWeight = ();
 	type BlockExecutionWeight = ();
 	type ExtrinsicBaseWeight = ();
+	type MaximumExtrinsicWeight = MaximumBlockWeight;
 	type MaximumBlockLength = MaximumBlockLength;
 	type AvailableBlockRatio = AvailableBlockRatio;
 	type Version = ();
diff --git a/frame/staking/Cargo.toml b/frame/staking/Cargo.toml
index 0fecc4ffd4..80193b3dc0 100644
--- a/frame/staking/Cargo.toml
+++ b/frame/staking/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "darwinia-staking"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "FRAME pallet staking"
 edition = "2018"
@@ -19,17 +19,17 @@ static_assertions = { version = "1.1.0" }
 darwinia-staking-rpc-runtime-api = { default-features = false, path = "./rpc/runtime-api" }
 darwinia-support = { default-features = false, path = "../support" }
 # substrate
-frame-benchmarking = { default-features = false, optional = true, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-authorship = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-session = { default-features = false, features = ["historical"], git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-core = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-io = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-phragmen = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-staking = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+frame-benchmarking = { default-features = false, optional = true, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-authorship = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-session = { default-features = false, features = ["historical"], git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-core = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-io = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-phragmen = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-staking = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [dev-dependencies]
 # crates
@@ -39,10 +39,10 @@ rand_chacha = { version = "0.2" }
 darwinia-balances = { path = "../../frame/balances" }
 darwinia-support = { features = ["easy-testing"], path = "../support" }
 # substrate
-frame-benchmarking = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-pallet-timestamp = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-storage = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-substrate-test-utils = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+frame-benchmarking = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+pallet-timestamp = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-storage = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+substrate-test-utils = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
diff --git a/frame/staking/rpc/Cargo.toml b/frame/staking/rpc/Cargo.toml
index 18a944c983..86e3ff98dc 100644
--- a/frame/staking/rpc/Cargo.toml
+++ b/frame/staking/rpc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "darwinia-staking-rpc"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "Node-specific RPC methods for interaction with staking."
 edition = "2018"
@@ -17,6 +17,6 @@ jsonrpc-derive = "14.0.3"
 # darwinia
 darwinia-staking-rpc-runtime-api = { path = "./runtime-api" }
 # substrate
-sp-api = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-blockchain = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+sp-api = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-blockchain = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
diff --git a/frame/staking/rpc/runtime-api/Cargo.toml b/frame/staking/rpc/runtime-api/Cargo.toml
index 7e34d97ec0..1d00edda4d 100644
--- a/frame/staking/rpc/runtime-api/Cargo.toml
+++ b/frame/staking/rpc/runtime-api/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "darwinia-staking-rpc-runtime-api"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "Runtime API definition required by staking RPC extensions."
 edition = "2018"
@@ -15,8 +15,8 @@ serde = { version = "1.0.106", optional = true, features = ["derive"] }
 # darwinia
 darwinia-support = { default-features = false, path = "../../../support" }
 # substrate
-sp-api = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+sp-api = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
diff --git a/frame/staking/src/lib.rs b/frame/staking/src/lib.rs
index 7a89fdce94..30cddeb616 100644
--- a/frame/staking/src/lib.rs
+++ b/frame/staking/src/lib.rs
@@ -334,6 +334,76 @@ mod types {
 	type KtonCurrency<T> = <T as Trait>::KtonCurrency;
 }
 
+pub mod weight {
+	// --- custom ---
+	use super::*;
+
+	/// All weight notes are pertaining to the case of a better solution, in which we execute
+	/// the longest code path.
+	/// Weight: 0 + (0.63 μs * v) + (0.36 μs * n) + (96.53 μs * a ) + (8 μs * w ) with:
+	/// * v validators in snapshot validators,
+	/// * n nominators in snapshot nominators,
+	/// * a assignment in the submitted solution
+	/// * w winners in the submitted solution
+	///
+	/// State reads:
+	/// 	- Initial checks:
+	/// 		- ElectionState, CurrentEra, QueuedScore
+	/// 		- SnapshotValidators.len() + SnapShotNominators.len()
+	/// 		- ValidatorCount
+	/// 		- SnapshotValidators
+	/// 		- SnapshotNominators
+	/// 	- Iterate over nominators:
+	/// 		- compact.len() * Nominators(who)
+	/// 		- (non_self_vote_edges) * SlashingSpans
+	/// 	- For `assignment_ratio_to_staked`: Basically read the staked value of each stash.
+	/// 		- (winners.len() + compact.len()) * (Ledger + Bonded)
+	/// 		- TotalIssuance (read a gzillion times potentially, but well it is cached.)
+	/// - State writes:
+	/// 	- QueuedElected, QueuedScore
+	pub fn weight_for_submit_solution<T: Trait>(
+		winners: &Vec<ValidatorIndex>,
+		compact: &CompactAssignments,
+		size: &ElectionSize,
+	) -> Weight {
+		(630 * WEIGHT_PER_NANOS)
+			.saturating_mul(size.validators as Weight)
+			.saturating_add((360 * WEIGHT_PER_NANOS).saturating_mul(size.nominators as Weight))
+			.saturating_add((96 * WEIGHT_PER_MICROS).saturating_mul(compact.len() as Weight))
+			.saturating_add((8 * WEIGHT_PER_MICROS).saturating_mul(winners.len() as Weight))
+			// Initial checks
+			.saturating_add(T::DbWeight::get().reads(8))
+			// Nominators
+			.saturating_add(T::DbWeight::get().reads(compact.len() as Weight))
+			// SlashingSpans (upper bound for invalid solution)
+			.saturating_add(T::DbWeight::get().reads(compact.edge_count() as Weight))
+			// `assignment_ratio_to_staked`
+			.saturating_add(
+				T::DbWeight::get().reads(2 * ((winners.len() + compact.len()) as Weight)),
+			)
+			.saturating_add(T::DbWeight::get().reads(1))
+			// write queued score and elected
+			.saturating_add(T::DbWeight::get().writes(2))
+	}
+
+	/// Weight of `submit_solution` in case of a correct submission.
+	///
+	/// refund: we charged compact.len() * read(1) for SlashingSpans. A valid solution only reads
+	/// winners.len().
+	pub fn weight_for_correct_submit_solution<T: Trait>(
+		winners: &Vec<ValidatorIndex>,
+		compact: &CompactAssignments,
+		size: &ElectionSize,
+	) -> Weight {
+		// NOTE: for consistency, we re-compute the original weight to maintain their relation and
+		// prevent any foot-guns.
+		let original_weight = weight_for_submit_solution::<T>(winners, compact, size);
+		original_weight
+			.saturating_sub(T::DbWeight::get().reads(compact.edge_count() as Weight))
+			.saturating_add(T::DbWeight::get().reads(winners.len() as Weight))
+	}
+}
+
 // --- darwinia ---
 pub use types::EraIndex;
 
@@ -341,8 +411,8 @@ pub use types::EraIndex;
 use codec::{Decode, Encode, HasCompact};
 // --- substrate ---
 use frame_support::{
-	debug, decl_error, decl_event, decl_module, decl_storage,
-	dispatch::IsSubType,
+	decl_error, decl_event, decl_module, decl_storage,
+	dispatch::{DispatchResultWithPostInfo, IsSubType, WithPostDispatchInfo},
 	ensure,
 	storage::IterableStorageMap,
 	traits::{
@@ -393,13 +463,14 @@ use darwinia_support::{
 };
 use types::*;
 
-// syntactic sugar for logging
-#[cfg(feature = "std")]
-const LOG_TARGET: &'static str = "staking";
+pub(crate) const LOG_TARGET: &'static str = "staking";
+
+// syntactic sugar for logging.
+#[macro_export]
 macro_rules! log {
 	($level:tt, $patter:expr $(, $values:expr)* $(,)?) => {
-		debug::native::$level!(
-			target: LOG_TARGET,
+		frame_support::debug::$level!(
+			target: crate::LOG_TARGET,
 			$patter $(, $values)*
 		)
 	};
@@ -540,7 +611,7 @@ where
 pub struct ActiveEraInfo {
 	/// Index of era.
 	pub index: EraIndex,
-	/// Moment of start expresed as millisecond from `$UNIX_EPOCH`.
+	/// Moment of start expressed as millisecond from `$UNIX_EPOCH`.
 	///
 	/// Start can be none if start hasn't been set for the era yet,
 	/// Start is set on the first on_finalize of the era to guarantee usage of `Time`.
@@ -822,6 +893,21 @@ pub struct UnappliedSlash<AccountId, RingBalance, KtonBalance> {
 	payout: slashing::RK<RingBalance, KtonBalance>,
 }
 
+/// Some indications about the size of the election. This must be submitted with the solution.
+///
+/// Note that these values must reflect the __total__ number, not only those that are present in the
+/// solution. In short, these should be the same size as the size of the values dumped in
+/// `SnapshotValidators` and `SnapshotNominators`.
+#[derive(PartialEq, Eq, Clone, Encode, Decode, RuntimeDebug, Default)]
+pub struct ElectionSize {
+	/// Number of validators in the snapshot of the current election round.
+	#[codec(compact)]
+	pub validators: ValidatorIndex,
+	/// Number of nominators in the snapshot of the current election round.
+	#[codec(compact)]
+	pub nominators: NominatorIndex,
+}
+
 /// The result of an election round.
 #[derive(PartialEq, Eq, Clone, Encode, Decode, RuntimeDebug)]
 pub struct ElectionResult<AccountId, RingBalance: HasCompact, KtonBalance: HasCompact> {
@@ -1220,6 +1306,9 @@ decl_event!(
 		/// A new set of stakers was elected with the given computation method.
 		StakingElection(ElectionCompute),
 
+		/// A new solution for the upcoming election has been stored.
+		SolutionStored(ElectionCompute),
+
 		/// Bond succeed.
 		/// `amount` in `RingBalance<T>`, `start_time` in `TsInMs`, `expired_time` in `TsInMs`
 		BondRing(RingBalance, TsInMs, TsInMs),
@@ -1297,6 +1386,8 @@ decl_error! {
 		PhragmenBogusEdge,
 		/// The claimed score does not match with the one computed from the data.
 		PhragmenBogusScore,
+		/// The election size is invalid.
+		PhragmenBogusElectionSize,
 		/// The call is not allowed at the given time due to restrictions of election period.
 		CallNotAllowed,
 		/// Incorrect previous history depth input provided.
@@ -1394,7 +1485,7 @@ decl_module! {
 					);
 				} else {
 					if let Err(e) = compute_offchain_election::<T>() {
-						log!(warn, "💸 Error in phragmen offchain worker: {:?}", e);
+						log!(error, "💸 Error in phragmen offchain worker: {:?}", e);
 					} else {
 						log!(debug, "Executed offchain worker thread without errors.");
 					}
@@ -2361,51 +2452,26 @@ decl_module! {
 		///	minimized (to ensure less variance)
 		///
 		/// # <weight>
-		/// E: number of edges. m: size of winner committee. n: number of nominators. d: edge degree
-		/// (16 for now) v: number of on-chain validator candidates.
-		///
-		/// NOTE: given a solution which is reduced, we can enable a new check the ensure `|E| < n +
-		/// m`. We don't do this _yet_, but our offchain worker code executes it nonetheless.
-		///
-		/// major steps (all done in `check_and_replace_solution`):
-		///
-		/// - Storage: O(1) read `ElectionStatus`.
-		/// - Storage: O(1) read `PhragmenScore`.
-		/// - Storage: O(1) read `ValidatorCount`.
-		/// - Storage: O(1) length read from `SnapshotValidators`.
-		///
-		/// - Storage: O(v) reads of `AccountId` to fetch `snapshot_validators`.
-		/// - Memory: O(m) iterations to map winner index to validator id.
-		/// - Storage: O(n) reads `AccountId` to fetch `snapshot_nominators`.
-		/// - Memory: O(n + m) reads to map index to `AccountId` for un-compact.
-		///
-		/// - Storage: O(e) accountid reads from `Nomination` to read correct nominations.
-		/// - Storage: O(e) calls into `slashable_balance_of_vote_weight` to convert ratio to staked.
-		///
-		/// - Memory: build_support_map. O(e).
-		/// - Memory: evaluate_support: O(E).
-		///
-		/// - Storage: O(e) writes to `QueuedElected`.
-		/// - Storage: O(1) write to `QueuedScore`
-		///
-		/// The weight of this call is 1/10th of the blocks total weight.
+		/// See `crate::weight` module.
 		/// # </weight>
-		#[weight = 100_000_000_000]
+		#[weight = weight::weight_for_submit_solution::<T>(winners, compact, size)]
 		pub fn submit_election_solution(
 			origin,
 			winners: Vec<ValidatorIndex>,
-			compact_assignments: CompactAssignments,
+			compact: CompactAssignments,
 			score: PhragmenScore,
 			era: EraIndex,
-		) {
+			size: ElectionSize,
+		) -> DispatchResultWithPostInfo {
 			let _who = ensure_signed(origin)?;
 			Self::check_and_replace_solution(
 				winners,
-				compact_assignments,
+				compact,
 				ElectionCompute::Signed,
 				score,
 				era,
-			)?
+				size,
+			)
 		}
 
 		/// Unsigned version of `submit_election_solution`.
@@ -2413,22 +2479,28 @@ decl_module! {
 		/// Note that this must pass the [`ValidateUnsigned`] check which only allows transactions
 		/// from the local node to be included. In other words, only the block author can include a
 		/// transaction in the block.
-		#[weight = 100_000_000_000]
+		///
+		/// # <weight>
+		/// See `crate::weight` module.
+		/// # </weight>
+		#[weight = weight::weight_for_submit_solution::<T>(winners, compact, size)]
 		pub fn submit_election_solution_unsigned(
 			origin,
 			winners: Vec<ValidatorIndex>,
-			compact_assignments: CompactAssignments,
+			compact: CompactAssignments,
 			score: PhragmenScore,
 			era: EraIndex,
-		) {
+			size: ElectionSize,
+		)  -> DispatchResultWithPostInfo {
 			ensure_none(origin)?;
 			Self::check_and_replace_solution(
 				winners,
-				compact_assignments,
+				compact,
 				ElectionCompute::Unsigned,
 				score,
 				era,
-			)?
+				size,
+			)
 			// TODO: instead of returning an error, panic. This makes the entire produced block
 			// invalid.
 			// This ensures that block authors will not ever try and submit a solution which is not
@@ -2535,6 +2607,7 @@ impl<T: Trait> Module<T> {
 
 	/// The total power that can be slashed from a stash account as of right now.
 	pub fn power_of(stash: &T::AccountId) -> Power {
+		// Weight note: consider making the stake accessible through stash.
 		Self::bonded(stash)
 			.and_then(Self::ledger)
 			.map(|l| {
@@ -2561,6 +2634,7 @@ impl<T: Trait> Module<T> {
 	}
 
 	pub fn stake_of(stash: &T::AccountId) -> (RingBalance<T>, KtonBalance<T>) {
+		// Weight note: consider making the stake accessible through stash.
 		Self::bonded(stash)
 			.and_then(Self::ledger)
 			.map(|l| (l.active_ring, l.active_kton))
@@ -2571,7 +2645,7 @@ impl<T: Trait> Module<T> {
 	///
 	/// This data is used to efficiently evaluate election results. returns `true` if the operation
 	/// is successful.
-	fn create_stakers_snapshot() -> (bool, Weight) {
+	pub fn create_stakers_snapshot() -> (bool, Weight) {
 		let mut consumed_weight = 0;
 		let mut add_db_reads_writes = |reads, writes| {
 			consumed_weight += T::DbWeight::get().reads_writes(reads, writes);
@@ -2813,28 +2887,36 @@ impl<T: Trait> Module<T> {
 	}
 
 	/// Basic and cheap checks that we perform in validate unsigned, and in the execution.
-	pub fn pre_dispatch_checks(score: PhragmenScore, era: EraIndex) -> Result<(), Error<T>> {
+	///
+	/// State reads: ElectionState, CurrentEr, QueuedScore.
+	///
+	/// This function does weight refund in case of errors, which is based upon the fact that it is
+	/// called at the very beginning of the call site's function.
+	pub fn pre_dispatch_checks(score: PhragmenScore, era: EraIndex) -> DispatchResultWithPostInfo {
 		// discard solutions that are not in-time
 		// check window open
 		ensure!(
 			Self::era_election_status().is_open(),
-			<Error<T>>::PhragmenEarlySubmission,
+			<Error<T>>::PhragmenEarlySubmission.with_weight(T::DbWeight::get().reads(1)),
 		);
 
 		// check current era.
 		if let Some(current_era) = Self::current_era() {
-			ensure!(current_era == era, <Error<T>>::PhragmenEarlySubmission,)
+			ensure!(
+				current_era == era,
+				<Error<T>>::PhragmenEarlySubmission.with_weight(T::DbWeight::get().reads(2)),
+			)
 		}
 
 		// assume the given score is valid. Is it better than what we have on-chain, if we have any?
 		if let Some(queued_score) = Self::queued_score() {
 			ensure!(
 				is_score_better(queued_score, score),
-				<Error<T>>::PhragmenWeakSubmission,
+				<Error<T>>::PhragmenWeakSubmission.with_weight(T::DbWeight::get().reads(3)),
 			)
 		}
 
-		Ok(())
+		Ok(None.into())
 	}
 
 	/// Checks a given solution and if correct and improved, writes it on chain as the queued result
@@ -2845,24 +2927,49 @@ impl<T: Trait> Module<T> {
 		compute: ElectionCompute,
 		claimed_score: PhragmenScore,
 		era: EraIndex,
-	) -> Result<(), Error<T>> {
+		election_size: ElectionSize,
+	) -> DispatchResultWithPostInfo {
 		// Do the basic checks. era, claimed score and window open.
 		Self::pre_dispatch_checks(claimed_score, era)?;
+		// the weight that we will refund in case of a correct submission. We compute this now
+		// because the data needed for it will be consumed further down.
+		let adjusted_weight = weight::weight_for_correct_submit_solution::<T>(
+			&winners,
+			&compact_assignments,
+			&election_size,
+		);
 
 		// Check that the number of presented winners is sane. Most often we have more candidates
-		// that we need. Then it should be Self::validator_count(). Else it should be all the
+		// than we need. Then it should be `Self::validator_count()`. Else it should be all the
 		// candidates.
-		let snapshot_length =
-			<SnapshotValidators<T>>::decode_len().ok_or_else(|| <Error<T>>::SnapshotUnavailable)?;
+		let snapshot_validators_length = <SnapshotValidators<T>>::decode_len()
+			.map(|l| l as u32)
+			.ok_or_else(|| Error::<T>::SnapshotUnavailable)?;
+
+		// size of the solution must be correct.
+		ensure!(
+			snapshot_validators_length == u32::from(election_size.validators),
+			<Error<T>>::PhragmenBogusElectionSize,
+		);
 
 		// check the winner length only here and when we know the length of the snapshot validators
 		// length.
-		let desired_winners = Self::validator_count().min(snapshot_length as u32);
+		let desired_winners = Self::validator_count().min(snapshot_validators_length);
 		ensure!(
 			winners.len() as u32 == desired_winners,
 			<Error<T>>::PhragmenBogusWinnerCount
 		);
 
+		let snapshot_nominators_len = <SnapshotNominators<T>>::decode_len()
+			.map(|l| l as u32)
+			.ok_or_else(|| <Error<T>>::SnapshotUnavailable)?;
+
+		// rest of the size of the solution must be correct.
+		ensure!(
+			snapshot_nominators_len == election_size.nominators,
+			<Error<T>>::PhragmenBogusElectionSize,
+		);
+
 		// decode snapshot validators.
 		let snapshot_validators =
 			Self::snapshot_validators().ok_or(<Error<T>>::SnapshotUnavailable)?;
@@ -2883,7 +2990,7 @@ impl<T: Trait> Module<T> {
 
 		// decode the rest of the snapshot.
 		let snapshot_nominators =
-			<Module<T>>::snapshot_nominators().ok_or(<Error<T>>::SnapshotUnavailable)?;
+			Self::snapshot_nominators().ok_or(<Error<T>>::SnapshotUnavailable)?;
 
 		// helpers
 		let nominator_at = |i: NominatorIndex| -> Option<T::AccountId> {
@@ -2918,7 +3025,7 @@ impl<T: Trait> Module<T> {
 					"💸 detected an error in the staking locking and snapshot."
 				);
 				// abort.
-				return Err(<Error<T>>::PhragmenBogusNominator);
+				return Err(<Error<T>>::PhragmenBogusNominator.into());
 			}
 
 			if !is_validator {
@@ -2935,13 +3042,13 @@ impl<T: Trait> Module<T> {
 					// each target in the provided distribution must be actually nominated by the
 					// nominator after the last non-zero slash.
 					if nomination.targets.iter().find(|&tt| tt == t).is_none() {
-						return Err(<Error<T>>::PhragmenBogusNomination);
+						return Err(<Error<T>>::PhragmenBogusNomination.into());
 					}
 
 					if <Self as Store>::SlashingSpans::get(&t).map_or(false, |spans| {
 						nomination.submitted_in < spans.last_nonzero_slash()
 					}) {
-						return Err(<Error<T>>::PhragmenSlashedNomination);
+						return Err(<Error<T>>::PhragmenSlashedNomination.into());
 					}
 				}
 			} else {
@@ -2980,8 +3087,9 @@ impl<T: Trait> Module<T> {
 		let exposures = Self::collect_exposure(supports);
 		log!(
 			info,
-			"💸 A better solution (with compute {:?}) has been validated and stored on chain.",
+			"💸 A better solution (with compute {:?} and score {:?}) has been validated and stored on chain.",
 			compute,
+			submitted_score,
 		);
 
 		// write new results.
@@ -2992,7 +3100,10 @@ impl<T: Trait> Module<T> {
 		});
 		QueuedScore::put(submitted_score);
 
-		Ok(())
+		// emit event.
+		Self::deposit_event(RawEvent::SolutionStored(compute));
+
+		Ok(Some(adjusted_weight).into())
 	}
 
 	/// Start a session potentially starting an era.
@@ -3317,7 +3428,7 @@ impl<T: Trait> Module<T> {
 				let mut own_kton_balance: KtonBalance<T> = Zero::zero();
 				let mut own_power = 0;
 				let mut total_power = 0;
-				let mut others = vec![];
+				let mut others = Vec::with_capacity(support.voters.len());
 				support.voters.into_iter().for_each(|(nominator, weight)| {
 					let origin_weight = Self::power_of(&nominator) as ExtendedBalance;
 					let (origin_ring_balance, origin_kton_balance) = Self::stake_of(&nominator);
@@ -3329,8 +3440,8 @@ impl<T: Trait> Module<T> {
 					) {
 						ring_balance.saturated_into()
 					} else {
-						debug::error!(
-							target: "staking",
+						log!(
+							error,
 							"[staking] Origin RING: {:?}, Weight: {:?}, Origin Weight: {:?}",
 							origin_ring_balance,
 							weight,
@@ -3345,8 +3456,8 @@ impl<T: Trait> Module<T> {
 					) {
 						kton_balance.saturated_into()
 					} else {
-						debug::error!(
-							target: "staking",
+						log!(
+							error,
 							"[staking] Origin KTON: {:?}, Weight: {:?}, Origin Weight: {:?}",
 							origin_kton_balance,
 							weight,
@@ -3580,7 +3691,8 @@ impl<T: Trait> Convert<T::AccountId, Option<ExposureT<T>>> for ExposureOf<T> {
 }
 
 /// This is intended to be used with `FilterHistoricalOffences`.
-impl<T: Trait> OnOffenceHandler<T::AccountId, pallet_session::historical::IdentificationTuple<T>>
+impl<T: Trait>
+	OnOffenceHandler<T::AccountId, pallet_session::historical::IdentificationTuple<T>, Weight>
 	for Module<T>
 where
 	T: pallet_session::Trait<ValidatorId = AccountId<T>>,
@@ -3599,18 +3711,23 @@ where
 		>],
 		slash_fraction: &[Perbill],
 		slash_session: SessionIndex,
-	) -> Result<(), ()> {
+	) -> Result<Weight, ()> {
 		if !Self::can_report() {
 			return Err(());
 		}
 
 		let reward_proportion = SlashRewardFraction::get();
+		let mut consumed_weight: Weight = 0;
+		let mut add_db_reads_writes = |reads, writes| {
+			consumed_weight += T::DbWeight::get().reads_writes(reads, writes);
+		};
 
 		let active_era = {
 			let active_era = Self::active_era();
+			add_db_reads_writes(1, 0);
 			if active_era.is_none() {
 				// this offence need not be re-submitted.
-				return Ok(());
+				return Ok(consumed_weight);
 			}
 			active_era
 				.expect("value checked not to be `None`; qed")
@@ -3621,6 +3738,7 @@ where
 				frame_support::print("Error: start_session_index must be set for current_era");
 				0
 			});
+		add_db_reads_writes(1, 0);
 
 		let window_start = active_era.saturating_sub(T::BondingDurationInEra::get());
 
@@ -3630,6 +3748,7 @@ where
 			active_era
 		} else {
 			let eras = BondedEras::get();
+			add_db_reads_writes(1, 0);
 
 			// reverse because it's more likely to find reports from recent eras.
 			match eras
@@ -3638,8 +3757,9 @@ where
 				.filter(|&&(_, ref sesh)| sesh <= &slash_session)
 				.next()
 			{
-				None => return Ok(()), // before bonding period. defensive - should be filtered out.
 				Some(&(ref slash_era, _)) => *slash_era,
+				// before bonding period. defensive - should be filtered out.
+				None => return Ok(consumed_weight),
 			}
 		};
 
@@ -3648,14 +3768,18 @@ where
 				*earliest = Some(active_era)
 			}
 		});
+		add_db_reads_writes(1, 1);
 
 		let slash_defer_duration = T::SlashDeferDuration::get();
 
+		let invulnerables = Self::invulnerables();
+		add_db_reads_writes(1, 0);
+
 		for (details, slash_fraction) in offenders.iter().zip(slash_fraction) {
 			let (stash, exposure) = &details.offender;
 
 			// Skip if the validator is invulnerable.
-			if Self::invulnerables().contains(stash) {
+			if invulnerables.contains(stash) {
 				continue;
 			}
 
@@ -3670,20 +3794,39 @@ where
 			});
 
 			if let Some(mut unapplied) = unapplied {
+				let nominators_len = unapplied.others.len() as u64;
+				let reporters_len = details.reporters.len() as u64;
+
+				{
+					let upper_bound = 1 /* Validator/NominatorSlashInEra */ + 2 /* fetch_spans */;
+					let rw = upper_bound + nominators_len * upper_bound;
+					add_db_reads_writes(rw, rw);
+				}
 				unapplied.reporters = details.reporters.clone();
 				if slash_defer_duration == 0 {
 					// apply right away.
 					slashing::apply_slash::<T>(unapplied);
+					{
+						let slash_cost = (6, 5);
+						let reward_cost = (2, 2);
+						add_db_reads_writes(
+							(1 + nominators_len) * slash_cost.0 + reward_cost.0 * reporters_len,
+							(1 + nominators_len) * slash_cost.1 + reward_cost.1 * reporters_len,
+						);
+					}
 				} else {
 					// defer to end of some `slash_defer_duration` from now.
 					<Self as Store>::UnappliedSlashes::mutate(active_era, move |for_later| {
 						for_later.push(unapplied)
 					});
+					add_db_reads_writes(1, 1);
 				}
+			} else {
+				add_db_reads_writes(4 /* fetch_spans */, 5 /* kick_out_if_recent */)
 			}
 		}
 
-		Ok(())
+		Ok(consumed_weight)
 	}
 
 	fn can_report() -> bool {
@@ -3760,18 +3903,14 @@ impl<T: Trait> OnDepositRedeem<T::AccountId> for Module<T> {
 	}
 }
 
-impl<T: Trait> From<Error<T>> for InvalidTransaction {
-	fn from(e: Error<T>) -> Self {
-		InvalidTransaction::Custom(e.as_u8())
-	}
-}
-
 #[allow(deprecated)]
 impl<T: Trait> frame_support::unsigned::ValidateUnsigned for Module<T> {
 	type Call = Call<T>;
 	fn validate_unsigned(source: TransactionSource, call: &Self::Call) -> TransactionValidity {
-		if let Call::submit_election_solution_unsigned(_, _, score, era) = call {
+		if let Call::submit_election_solution_unsigned(_, _, score, era, _) = call {
+			// --- substrate ---
 			use offchain_election::DEFAULT_LONGEVITY;
+			use sp_runtime::DispatchError;
 
 			// discard solution not coming from the local OCW.
 			match source {
@@ -3785,13 +3924,18 @@ impl<T: Trait> frame_support::unsigned::ValidateUnsigned for Module<T> {
 				}
 			}
 
-			if let Err(e) = Self::pre_dispatch_checks(*score, *era) {
+			if let Err(error_with_post_info) = Self::pre_dispatch_checks(*score, *era) {
+				let error = error_with_post_info.error;
+				let error_number = match error {
+					DispatchError::Module { error, .. } => error,
+					_ => 0,
+				};
 				log!(
 					debug,
-					"validate unsigned pre dispatch checks failed due to {:?}.",
-					e
+					"validate unsigned pre dispatch checks failed due to module error #{:?}.",
+					error,
 				);
-				return InvalidTransaction::from(e).into();
+				return InvalidTransaction::Custom(error_number).into();
 			}
 
 			log!(
diff --git a/frame/staking/src/mock.rs b/frame/staking/src/mock.rs
index 0983c19fe4..520d2537df 100644
--- a/frame/staking/src/mock.rs
+++ b/frame/staking/src/mock.rs
@@ -248,6 +248,7 @@ impl frame_system::Trait for Test {
 	type DbWeight = RocksDbWeight;
 	type BlockExecutionWeight = ();
 	type ExtrinsicBaseWeight = ();
+	type MaximumExtrinsicWeight = MaximumBlockWeight;
 	type MaximumBlockLength = MaximumBlockLength;
 	type AvailableBlockRatio = AvailableBlockRatio;
 	type Version = ();
diff --git a/frame/staking/src/offchain_election.rs b/frame/staking/src/offchain_election.rs
index a31558dd59..bbd2721d91 100644
--- a/frame/staking/src/offchain_election.rs
+++ b/frame/staking/src/offchain_election.rs
@@ -3,7 +3,7 @@
 // --- crates ---
 use codec::Decode;
 // --- substrate ---
-use frame_support::{debug, traits::Get};
+use frame_support::traits::Get;
 use frame_system::offchain::SubmitTransaction;
 use sp_phragmen::{
 	build_support_map, equalize, evaluate_support, reduce, Assignment, ExtendedBalance,
@@ -17,7 +17,8 @@ use sp_runtime::{
 use sp_std::{convert::TryInto, prelude::*};
 // --- darwinia ---
 use crate::{
-	Call, CompactAssignments, Module, NominatorIndex, OffchainAccuracy, Trait, ValidatorIndex,
+	Call, CompactAssignments, ElectionSize, Module, NominatorIndex, OffchainAccuracy, Trait,
+	ValidatorIndex,
 };
 
 /// Error types related to the offchain election machinery.
@@ -101,13 +102,14 @@ pub(crate) fn compute_offchain_election<T: Trait>() -> Result<(), OffchainElecti
 	} = <Module<T>>::do_phragmen::<OffchainAccuracy>().ok_or(OffchainElectionError::ElectionFailed)?;
 
 	// process and prepare it for submission.
-	let (winners, compact, score) = prepare_submission::<T>(assignments, winners, true)?;
+	let (winners, compact, score, size) = prepare_submission::<T>(assignments, winners, true)?;
 
 	// defensive-only: current era can never be none except genesis.
 	let current_era = <Module<T>>::current_era().unwrap_or_default();
 
 	// send it.
-	let call = Call::submit_election_solution_unsigned(winners, compact, score, current_era).into();
+	let call =
+		Call::submit_election_solution_unsigned(winners, compact, score, current_era, size).into();
 
 	<SubmitTransaction<T, Call<T>>>::submit_unsigned_transaction(call)
 		.map_err(|_| OffchainElectionError::PoolSubmissionFailed)
@@ -120,7 +122,15 @@ pub fn prepare_submission<T: Trait>(
 	assignments: Vec<Assignment<T::AccountId, OffchainAccuracy>>,
 	winners: Vec<(T::AccountId, ExtendedBalance)>,
 	do_reduce: bool,
-) -> Result<(Vec<ValidatorIndex>, CompactAssignments, PhragmenScore), OffchainElectionError>
+) -> Result<
+	(
+		Vec<ValidatorIndex>,
+		CompactAssignments,
+		PhragmenScore,
+		ElectionSize,
+	),
+	OffchainElectionError,
+>
 where
 	ExtendedBalance: From<<OffchainAccuracy as PerThing>::Inner>,
 {
@@ -220,12 +230,18 @@ where
 		}
 	}
 
-	debug::native::debug!(
-		target: "staking",
+	// both conversions are safe; snapshots are not created if they exceed.
+	let size = ElectionSize {
+		validators: snapshot_validators.len() as ValidatorIndex,
+		nominators: snapshot_nominators.len() as NominatorIndex,
+	};
+
+	crate::log!(
+		info,
 		"prepared solution after {} equalization iterations with score {:?}",
 		iterations_executed,
 		score,
 	);
 
-	Ok((winners_indexed, compact, score))
+	Ok((winners_indexed, compact, score, size))
 }
diff --git a/frame/staking/src/substrate_tests.rs b/frame/staking/src/substrate_tests.rs
index a0982920cb..5bfe23bbd4 100644
--- a/frame/staking/src/substrate_tests.rs
+++ b/frame/staking/src/substrate_tests.rs
@@ -3564,6 +3564,67 @@ fn bond_during_era_correctly_populates_claimed_rewards() {
 		});
 }
 
+#[test]
+fn offences_weight_calculated_correctly() {
+	ExtBuilder::default().nominate(true).build_and_execute(|| {
+		// On offence with zero offenders: 4 Reads, 1 Write
+		let zero_offence_weight = <Test as frame_system::Trait>::DbWeight::get().reads_writes(4, 1);
+		assert_eq!(
+			Staking::on_offence(&[], &[Perbill::from_percent(50)], 0),
+			Ok(zero_offence_weight)
+		);
+
+		// On Offence with N offenders, Unapplied: 4 Reads, 1 Write + 4 Reads, 5 Writes
+		let n_offence_unapplied_weight = <Test as frame_system::Trait>::DbWeight::get()
+			.reads_writes(4, 1)
+			+ <Test as frame_system::Trait>::DbWeight::get().reads_writes(4, 5);
+
+		let offenders: Vec<
+			OffenceDetails<
+				<Test as frame_system::Trait>::AccountId,
+				pallet_session::historical::IdentificationTuple<Test>,
+			>,
+		> = (1..10)
+			.map(|i| OffenceDetails {
+				offender: (
+					i,
+					Staking::eras_stakers(Staking::active_era().unwrap().index, i),
+				),
+				reporters: vec![],
+			})
+			.collect();
+		assert_eq!(
+			Staking::on_offence(&offenders, &[Perbill::from_percent(50)], 0),
+			Ok(n_offence_unapplied_weight)
+		);
+
+		// On Offence with one offenders, Applied
+		let one_offender = [OffenceDetails {
+			offender: (
+				11,
+				Staking::eras_stakers(Staking::active_era().unwrap().index, 11),
+			),
+			reporters: vec![1],
+		}];
+
+		let n = 1; // Number of offenders
+		let rw = 3 + 3 * n; // rw reads and writes
+		let one_offence_unapplied_weight = <Test as frame_system::Trait>::DbWeight::get().reads_writes(4, 1)
+			+ <Test as frame_system::Trait>::DbWeight::get().reads_writes(rw, rw)
+			// One `slash_cost`
+			+ <Test as frame_system::Trait>::DbWeight::get().reads_writes(6, 5)
+			// `slash_cost` * nominators (1)
+			+ <Test as frame_system::Trait>::DbWeight::get().reads_writes(6, 5)
+			// `reward_cost` * reporters (1)
+			+ <Test as frame_system::Trait>::DbWeight::get().reads_writes(2, 2);
+
+		assert_eq!(
+			Staking::on_offence(&one_offender, &[Perbill::from_percent(50)], 0),
+			Ok(one_offence_unapplied_weight)
+		);
+	});
+}
+
 #[test]
 fn on_initialize_weight_is_correct() {
 	ExtBuilder::default()
diff --git a/frame/support/Cargo.toml b/frame/support/Cargo.toml
index fdfb542065..ba30fb8488 100644
--- a/frame/support/Cargo.toml
+++ b/frame/support/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "darwinia-support"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "Support code for Darwinia runtime"
 edition = "2018"
@@ -14,9 +14,9 @@ codec = { package = "parity-scale-codec", version = "1.3.0", default-features =
 num-traits = { version = "0.2.11", default-features = false }
 impl-trait-for-tuples = { version = "0.1.3" }
 # substrate
-frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
diff --git a/frame/support/src/tests.rs b/frame/support/src/tests.rs
index 3f7bacc0aa..45f2f7d37e 100644
--- a/frame/support/src/tests.rs
+++ b/frame/support/src/tests.rs
@@ -1,3 +1,4 @@
+// --- custom ---
 use crate::*;
 
 /// Extract value from JSON response
diff --git a/frame/support/src/traits.rs b/frame/support/src/traits.rs
index 8bdda2134e..f70210a599 100644
--- a/frame/support/src/traits.rs
+++ b/frame/support/src/traits.rs
@@ -79,14 +79,14 @@ pub trait DustCollector<AccountId> {
 }
 
 #[impl_for_tuples(15)]
-impl<AccountId> DustCollector<AccountId> for Balances {
+impl<AccountId> DustCollector<AccountId> for Currencies {
 	fn check(who: &AccountId) -> Result<(), ()> {
-		for_tuples!( #( Balances::check(who)?; )* );
+		for_tuples!( #( Currencies::check(who)?; )* );
 		Ok(())
 	}
 
 	fn collect(who: &AccountId) {
-		for_tuples!( #( Balances::collect(who); )* );
+		for_tuples!( #( Currencies::collect(who); )* );
 	}
 }
 
diff --git a/frame/treasury/Cargo.toml b/frame/treasury/Cargo.toml
index 5da36f4cfb..6887aebc7d 100644
--- a/frame/treasury/Cargo.toml
+++ b/frame/treasury/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "darwinia-treasury"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "FRAME pallet to manage treasury"
 edition = "2018"
@@ -16,18 +16,18 @@ serde = { version = "1.0.106", optional = true, features = ["derive"] }
 darwinia-support = { default-features = false, path = "../support" }
 # substrate
 # TODO: benchmark
-# frame-benchmarking = { default-features = false, optional = true, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+# frame-benchmarking = { default-features = false, optional = true, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-support = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+frame-system = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [dev-dependencies]
 # darwinia
 darwinia-balances = { path = "../balances" }
 # substrate
-sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-io = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+sp-core = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-io = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
diff --git a/frame/treasury/src/mock.rs b/frame/treasury/src/mock.rs
index debfe5dff2..73d17a21e1 100644
--- a/frame/treasury/src/mock.rs
+++ b/frame/treasury/src/mock.rs
@@ -86,6 +86,7 @@ impl frame_system::Trait for Test {
 	type DbWeight = ();
 	type BlockExecutionWeight = ();
 	type ExtrinsicBaseWeight = ();
+	type MaximumExtrinsicWeight = MaximumBlockWeight;
 	type MaximumBlockLength = MaximumBlockLength;
 	type AvailableBlockRatio = AvailableBlockRatio;
 	type Version = ();
diff --git a/primitives/array-bytes/Cargo.toml b/primitives/array-bytes/Cargo.toml
index 31ab09bd61..ad8f5b6c20 100644
--- a/primitives/array-bytes/Cargo.toml
+++ b/primitives/array-bytes/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "array-bytes"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "Minimal array/bytes operation for runtime"
 edition = "2018"
@@ -10,7 +10,7 @@ repository = "https://github.com/darwinia-network/darwinia/"
 
 [dependencies]
 # substrate
-sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
diff --git a/primitives/eth-primitives/Cargo.toml b/primitives/eth-primitives/Cargo.toml
index 7c694a1643..b8e9716563 100644
--- a/primitives/eth-primitives/Cargo.toml
+++ b/primitives/eth-primitives/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "eth-primitives"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "Ethereum primitives for Darwinia Relay"
 edition = "2018"
@@ -25,8 +25,8 @@ primitive-types = { default-features = false, features = ["codec", "rlp"], git =
 rlp = { default-features = false, git = "https://github.com/darwinia-network/parity-common.git" }
 rlp-derive = { git = "https://github.com/darwinia-network/parity-common.git" }
 # substrate
-sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
-sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+sp-runtime = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
+sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [dev-dependencies]
 # crates
@@ -36,7 +36,7 @@ serde_json = { version = "1.0.51" }
 # github
 triehash = { git = "https://github.com/darwinia-network/parity-common.git" }
 # substrate
-frame-support = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+frame-support = { git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [features]
 default = ["std"]
diff --git a/primitives/merkle-patricia-trie/Cargo.toml b/primitives/merkle-patricia-trie/Cargo.toml
index 4c8fe3f803..cb72c6afb9 100644
--- a/primitives/merkle-patricia-trie/Cargo.toml
+++ b/primitives/merkle-patricia-trie/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "merkle-patricia-trie"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Darwinia Network <hello@darwinia.network>"]
 description = "Merkle-Patricia Trie (Ethereum Style)"
 edition = "2018"
@@ -15,7 +15,7 @@ hashbrown = { version = "0.7.1" }
 hash = { package = "keccak-hash", default-features = false, git = "https://github.com/darwinia-network/parity-common.git" }
 rlp = { default-features = false, git = "https://github.com/darwinia-network/parity-common.git" }
 # substrate
-sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-alpha.darwinia.8" }
+sp-std = { default-features = false, git = "https://github.com/darwinia-network/substrate.git", tag = "v2.0.0-rc.darwinia.1" }
 
 [dev-dependencies]
 # crates