diff --git a/.github/workflows/auto-approver.yaml b/.github/workflows/auto-approver.yaml
index a0731ab..cc72d15 100644
--- a/.github/workflows/auto-approver.yaml
+++ b/.github/workflows/auto-approver.yaml
@@ -10,7 +10,7 @@ jobs:
   autoapprove:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
       - name: Approve PR
         run: |
           gh pr review --approve || true
diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 7149dc4..90a317b 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
 
       - name: Get name
         id: name
diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
index bb1227b..b505cfc 100644
--- a/.github/workflows/lint.yaml
+++ b/.github/workflows/lint.yaml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
 
       - name: Install yamllint
         run: python3 -m pip install yamllint
diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index 83b47c0..b0fa203 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
 
       - name: Log in to the Container registry
         uses: docker/login-action@327cd5a69de6c009b9ce71bce8395f28e651bf99
diff --git a/.github/workflows/scan.yaml b/.github/workflows/scan.yaml
index 9d402ab..f629a4d 100644
--- a/.github/workflows/scan.yaml
+++ b/.github/workflows/scan.yaml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
 
       - name: Get name and version
         id: image_info