diff --git a/.github/workflows/build-and-deploy.yml b/.github/workflows/build-and-deploy.yml
index d46ade5..b06b229 100644
--- a/.github/workflows/build-and-deploy.yml
+++ b/.github/workflows/build-and-deploy.yml
@@ -28,7 +28,7 @@ jobs:
         node-version: [ 16.x ]
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: Setup Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
         with:
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 4684d0a..20cca45 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -35,7 +35,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v2
         with:
diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
index ecc373e..73e8b9d 100644
--- a/.github/workflows/dependency-review.yml
+++ b/.github/workflows/dependency-review.yml
@@ -9,6 +9,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: Dependency Review
         uses: actions/dependency-review-action@v3