diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 097b101f771..f138c18bb96 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -17,7 +17,7 @@ jobs:
     env:
       RUSTFLAGS: -Dwarnings
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.3
     - name: Install ${{ matrix.rust }}
       uses: dtolnay/rust-toolchain@master
       with:
@@ -38,7 +38,7 @@ jobs:
       RUSTFLAGS: -Dwarnings
       RUSTDOCFLAGS: -Dwarnings
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.3
     - uses: dtolnay/rust-toolchain@stable
       with:
         components: rustfmt, clippy
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 5dfdb8ac1b3..43ee0a27ca9 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -9,7 +9,7 @@ jobs:
     name: build rustdocs and put them on github pages
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.3
     - uses: dtolnay/rust-toolchain@stable
       with:
         components: rustfmt, clippy
diff --git a/.github/workflows/publish-crate.yml b/.github/workflows/publish-crate.yml
index ea15f463e6e..841000c813d 100644
--- a/.github/workflows/publish-crate.yml
+++ b/.github/workflows/publish-crate.yml
@@ -11,7 +11,7 @@ jobs:
     permissions:
       id-token: write
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.3
     - name: Install Rust toolchain
       uses: dtolnay/rust-toolchain@stable
     - id: auth