diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 730bf75f8..6322e402f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,7 +29,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: dtolnay/rust-toolchain@1.77.0
       - uses: Swatinem/rust-cache@v2
       - run: cargo test --workspace --no-fail-fast
 
@@ -38,7 +38,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: dtolnay/rust-toolchain@1.77.0
+        with:
+          components: clippy, rustfmt
       - uses: Swatinem/rust-cache@v2
       - run: cargo clippy --workspace --all-targets --all-features
       - run: cargo fmt --check --all
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c62ad56db..4e855064e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -37,7 +37,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - uses: dtolnay/rust-toolchain@stable
+    - uses: dtolnay/rust-toolchain@1.77.0
       with:
         target: ${{ matrix.target }}