diff --git a/.github/workflows/build-linux-arm.yml b/.github/workflows/build-linux-arm.yml
index 3b2d3986..21ff6aeb 100644
--- a/.github/workflows/build-linux-arm.yml
+++ b/.github/workflows/build-linux-arm.yml
@@ -45,7 +45,7 @@ jobs:
             cc: clang-15
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
     - name: Configure build
       working-directory: ${{ runner.temp }}
diff --git a/.github/workflows/build-linux.yml b/.github/workflows/build-linux.yml
index 620250cd..ef982128 100644
--- a/.github/workflows/build-linux.yml
+++ b/.github/workflows/build-linux.yml
@@ -49,7 +49,7 @@ jobs:
             ivf: ON
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
     - name: Install MKL
       timeout-minutes: 5
       run: |
diff --git a/.github/workflows/build-macos.yaml b/.github/workflows/build-macos.yaml
index 0303d943..8445d32b 100644
--- a/.github/workflows/build-macos.yaml
+++ b/.github/workflows/build-macos.yaml
@@ -44,7 +44,7 @@ jobs:
             needs_prefix: true
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
     - name: Install Compiler
       run: |
diff --git a/.github/workflows/cibuildwheel.yml b/.github/workflows/cibuildwheel.yml
index 8e88ee5c..2f9f5cc1 100644
--- a/.github/workflows/cibuildwheel.yml
+++ b/.github/workflows/cibuildwheel.yml
@@ -33,7 +33,7 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
     - name: Build Container
       run: |
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index fbcf6462..a48a2750 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -21,7 +21,7 @@ jobs:
   pre-commit:
     runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
     - uses: actions/setup-python@v6
       with:
         python-version: '3.12'
diff --git a/.github/workflows/skywalking-eyes.yml b/.github/workflows/skywalking-eyes.yml
index 5bdfb74b..a6840610 100644
--- a/.github/workflows/skywalking-eyes.yml
+++ b/.github/workflows/skywalking-eyes.yml
@@ -34,7 +34,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - name: "Run check"
         uses: apache/skywalking-eyes/header@61275cc80d0798a405cb070f7d3a8aaf7cf2c2c1 # v0.8.0
         with: