diff --git a/.github/workflows/auto-approver.yaml b/.github/workflows/auto-approver.yaml
index 5daee84..74302bf 100644
--- a/.github/workflows/auto-approver.yaml
+++ b/.github/workflows/auto-approver.yaml
@@ -10,7 +10,7 @@ jobs:
   autoapprove:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
       - name: Approve PR
         run: |
           gh pr review --approve || true
diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 1b9da12..fe05ce5 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
 
       - name: Get name
         id: name
diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
index bb1227b..c6634ee 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@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
 
       - name: Install yamllint
         run: python3 -m pip install yamllint
diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index f6b261e..c5d48bf 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
 
       - name: Log in to the Container registry
         uses: docker/login-action@3b8fed7e4b60203b2aa0ecc6c6d6d91d12c06760
diff --git a/.github/workflows/scan.yaml b/.github/workflows/scan.yaml
index e8b7f7e..097f0d6 100644
--- a/.github/workflows/scan.yaml
+++ b/.github/workflows/scan.yaml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
 
       - name: Get name and version
         id: image_info