diff --git a/runtime/crab/Cargo.toml b/runtime/crab/Cargo.toml
index 18112da41..2bee6be71 100644
--- a/runtime/crab/Cargo.toml
+++ b/runtime/crab/Cargo.toml
@@ -274,7 +274,8 @@ on-chain-release-build = [
 
 runtime-benchmarks = [
 	# crates.io
-	# "array-bytes",
+	# TODO: optional
+	# "array-bytes
 
 	# cumulus
 	"cumulus-pallet-parachain-system/runtime-benchmarks",
diff --git a/runtime/crab/src/migration.rs b/runtime/crab/src/migration.rs
index 60e8bb20f..4392b3457 100644
--- a/runtime/crab/src/migration.rs
+++ b/runtime/crab/src/migration.rs
@@ -41,47 +41,33 @@ impl frame_support::traits::OnRuntimeUpgrade for CustomOnRuntimeUpgrade {
 }
 
 fn migrate() -> frame_support::weights::Weight {
-	let items: &[(&[u8], &[&[u8]])] = &[
-		(b"MessageGadget", &[b"CommitmentContract"]),
-		(
-			b"EcdsaAuthority",
-			&[
-				b"Authorities",
-				b"NextAuthorities",
-				b"Nonce",
-				b"AuthoritiesChangeToSign",
-				b"MessageRootToSign",
-			],
-		),
-		(
-			b"Council",
-			&[b"Proposals", b"ProposalOf", b"Voting", b"ProposalCount", b"Members", b"Prime"],
-		),
-		(
-			b"Democracy",
-			&[
-				b"PublicPropCount",
-				b"PublicProps",
-				b"DepositOf",
-				b"ReferendumCount",
-				b"LowestUnbaked",
-				b"ReferendumInfoOf",
-				b"VotingOf",
-				b"LastTabledWasExternal",
-				b"NextExternal",
-				b"Blacklist",
-				b"Cancellations",
-				b"MetadataOf",
-			],
-		),
-	];
+	// substrate
+	use pallet_balances::Locks;
 
-	let w = items.iter().fold(0, |w, (p, is)| {
-		w + is.iter().fold(0, |w, i| {
-			w + migration::clear_storage_prefix(p, i, &[], None, None).backend as u64
-		})
+	[
+		("0xd891ce6a97b4f01a8b9b36d0298aa3631fe2eef5", b"phrelect"),
+		("0xabcf7060a68f62624f7569ada9d78b5a5db0782a", b"phrelect"),
+		("0x88a39b052d477cfde47600a7c9950a441ce61cb4", b"phrelect"),
+		("0x9f33a4809aa708d7a399fedba514e0a0d15efa85", b"phrelect"),
+		("0x0a1287977578f888bdc1c7627781af1cc000e6ab", b"phrelect"),
+		("0xe59261f6d4088bcd69985a3d369ff14cc54ef1e5", b"phrelect"),
+		("0x7ae2a0914db8bfbdad538b0eac3fa473a0e07843", b"democrac"),
+		("0xacfa39b864e42d1bd3792783a571d2958af0bf1f", b"democrac"),
+		("0x3e25247cff03f99a7d83b28f207112234fee73a6", b"phrelect"),
+		("0xb2960e11b253c107f973cd778bbe1520e35e8602", b"phrelect"),
+		("0x4ed7ae57608cf4f60753cde4f49cf821c293ed2a", b"democrac"),
+		("0x5b7544b3f6abd9e03fba494796b1ee6f9543e2e4", b"phrelect"),
+		("0x44cda595218ddb3810fb66c2e982f50ea00255ee", b"phrelect"),
+	]
+	.iter()
+	.for_each(|(acct, lid)| {
+		if let Ok(acct) = array_bytes::hex_n_into::<_, AccountId, 20>(acct) {
+			<Locks<Runtime>>::mutate(acct, |ls| {
+				ls.retain(|l| &l.id != *lid);
+			});
+		}
 	});
 
 	// frame_support::weights::Weight::zero()
-	<Runtime as frame_system::Config>::DbWeight::get().reads_writes(0, w)
+	<Runtime as frame_system::Config>::DbWeight::get().reads_writes(0, 26)
 }
diff --git a/runtime/darwinia/Cargo.toml b/runtime/darwinia/Cargo.toml
index 42497a5e3..4521d67b5 100644
--- a/runtime/darwinia/Cargo.toml
+++ b/runtime/darwinia/Cargo.toml
@@ -18,7 +18,8 @@ scale-info        = { workspace = true }
 static_assertions = { workspace = true }
 strum             = { workspace = true, features = ["derive"] }
 # crates.io optional
-array-bytes = { workspace = true, optional = true }
+# TODO: optional
+array-bytes = { workspace = true }
 
 # cumulus
 cumulus-pallet-aura-ext         = { workspace = true }
@@ -117,21 +118,21 @@ pallet-transaction-payment                 = { workspace = true }
 pallet-transaction-payment-rpc-runtime-api = { workspace = true }
 pallet-treasury                            = { workspace = true }
 # pallet-tx-pause                            = { workspace = true }
-pallet-utility                             = { workspace = true }
-pallet-vesting                             = { workspace = true }
-pallet-whitelist                           = { workspace = true }
-sp-api                                     = { workspace = true }
-sp-block-builder                           = { workspace = true }
-sp-consensus-aura                          = { workspace = true }
-sp-core                                    = { workspace = true }
-sp-inherents                               = { workspace = true }
-sp-offchain                                = { workspace = true }
-sp-runtime                                 = { workspace = true }
-sp-session                                 = { workspace = true }
-sp-staking                                 = { workspace = true }
-sp-std                                     = { workspace = true }
-sp-transaction-pool                        = { workspace = true }
-sp-version                                 = { workspace = true }
+pallet-utility      = { workspace = true }
+pallet-vesting      = { workspace = true }
+pallet-whitelist    = { workspace = true }
+sp-api              = { workspace = true }
+sp-block-builder    = { workspace = true }
+sp-consensus-aura   = { workspace = true }
+sp-core             = { workspace = true }
+sp-inherents        = { workspace = true }
+sp-offchain         = { workspace = true }
+sp-runtime          = { workspace = true }
+sp-session          = { workspace = true }
+sp-staking          = { workspace = true }
+sp-std              = { workspace = true }
+sp-transaction-pool = { workspace = true }
+sp-version          = { workspace = true }
 # substrate optional
 frame-benchmarking        = { workspace = true, optional = true }
 frame-system-benchmarking = { workspace = true, optional = true }
@@ -293,7 +294,8 @@ on-chain-release-build = [
 
 runtime-benchmarks = [
 	# crates.io
-	"array-bytes",
+	# TODO: optional
+	# "array-bytes",
 
 	# cumulus
 	"cumulus-pallet-parachain-system/runtime-benchmarks",
diff --git a/runtime/darwinia/src/migration.rs b/runtime/darwinia/src/migration.rs
index 7d109d3ce..0ade34422 100644
--- a/runtime/darwinia/src/migration.rs
+++ b/runtime/darwinia/src/migration.rs
@@ -42,20 +42,27 @@ impl frame_support::traits::OnRuntimeUpgrade for CustomOnRuntimeUpgrade {
 
 fn migrate() -> frame_support::weights::Weight {
 	// substrate
-	use frame_support::pallet_prelude::StorageVersion;
-	use sp_core::H160;
-	use sp_std::str::FromStr;
+	use pallet_balances::Locks;
 
-	const REVERT_BYTECODE: [u8; 5] = [0x60, 0x00, 0x60, 0x00, 0xFD];
-	// CONVICTION_VOTING_ADDRESS equals to the addr(1538) in the pallet-evm runtime.
-	const CONVICTION_VOTING_ADDRESS: &str = "0x0000000000000000000000000000000000000602";
-	if let Ok(addr) = H160::from_str(CONVICTION_VOTING_ADDRESS) {
-		EVM::create_account(addr, REVERT_BYTECODE.to_vec());
-		return RuntimeBlockWeights::get().max_block;
-	}
-
-	StorageVersion::new(1).put::<pallet_referenda::Pallet<Runtime>>();
+	[
+		("0xabcf7060a68f62624f7569ada9d78b5a5db0782a", b"phrelect"),
+		("0x88a39b052d477cfde47600a7c9950a441ce61cb4", b"phrelect"),
+		("0x9f33a4809aa708d7a399fedba514e0a0d15efa85", b"phrelect"),
+		("0x0a1287977578f888bdc1c7627781af1cc000e6ab", b"phrelect"),
+		("0xe59261f6d4088bcd69985a3d369ff14cc54ef1e5", b"phrelect"),
+		("0x7ae2a0914db8bfbdad538b0eac3fa473a0e07843", b"phrelect"),
+		("0x3e25247cff03f99a7d83b28f207112234fee73a6", b"phrelect"),
+		("0xb2960e11b253c107f973cd778bbe1520e35e8602", b"phrelect"),
+	]
+	.iter()
+	.for_each(|(acct, lid)| {
+		if let Ok(acct) = array_bytes::hex_n_into::<_, AccountId, 20>(acct) {
+			<Locks<Runtime>>::mutate(acct, |ls| {
+				ls.retain(|l| &l.id != *lid);
+			});
+		}
+	});
 
 	// frame_support::weights::Weight::zero()
-	<Runtime as frame_system::Config>::DbWeight::get().reads_writes(0, 5)
+	<Runtime as frame_system::Config>::DbWeight::get().reads_writes(0, 16)
 }