diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index a19a8011..3b8daa4c 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: Setup yq
         uses: fluxcd/pkg/actions/yq@main
       - name: Setup kubeconform
@@ -28,7 +28,7 @@ jobs:
         environment: [local] # Add more environments here when needed
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: Setup Flux
         uses: fluxcd/flux2/action@main
       - name: Extract branch name
diff --git a/.github/workflows/update-flux.yaml b/.github/workflows/update-flux.yaml
index 390f239a..4e1f6e76 100644
--- a/.github/workflows/update-flux.yaml
+++ b/.github/workflows/update-flux.yaml
@@ -17,7 +17,7 @@ jobs:
         environment: [] # Add more environments here when needed
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: Setup Flux
         uses: fluxcd/flux2/action@main
       - name: Check for updates