diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index ff25f32..3674c3a 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -16,10 +16,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - name: Install minimal nightly
+    - name: Install minimal stable
       uses: actions-rs/toolchain@v1
       with:
-        toolchain: nightly
+        toolchain: stable
         override: true
     # TODO: do not use caching for actual release builds, aka ones that start with v*
     - uses: Swatinem/rust-cache@v1        
diff --git a/clearing-house-app/ch-lib/Cargo.toml b/clearing-house-app/ch-lib/Cargo.toml
index 52386b9..59d4b06 100644
--- a/clearing-house-app/ch-lib/Cargo.toml
+++ b/clearing-house-app/ch-lib/Cargo.toml
@@ -9,7 +9,7 @@ edition = "2018"
 
 [dependencies]
 biscuit = { git = "https://github.com/lawliet89/biscuit", branch = "master" }
-core-lib = { git = "https://github.com/Fraunhofer-AISEC/ids-clearing-house-core.git" }
+core-lib = { git = "https://github.com/Fraunhofer-AISEC/ids-clearing-house-core.git", tag = "v0.7.5" }
 chrono = { version = "0.4", features = ["serde"] }
 error-chain = "0.12.4"
 fern = "0.5"
diff --git a/clearing-house-app/clearing-house-api/Cargo.toml b/clearing-house-app/clearing-house-api/Cargo.toml
index 781ff5b..de72df0 100644
--- a/clearing-house-app/clearing-house-api/Cargo.toml
+++ b/clearing-house-app/clearing-house-api/Cargo.toml
@@ -9,7 +9,7 @@ edition = "2018"
 
 [dependencies]
 biscuit = { git = "https://github.com/lawliet89/biscuit", branch = "master" }
-core-lib = { git = "https://github.com/Fraunhofer-AISEC/ids-clearing-house-core.git" }
+core-lib = { git = "https://github.com/Fraunhofer-AISEC/ids-clearing-house-core.git", tag = "v0.7.5" }
 ch-lib = { path = "../ch-lib"}
 chrono = { version = "0.4", features = ["serde"] }
 error-chain = "0.12.1"