diff --git a/.github/workflows/codacy-analysis.yml b/.github/workflows/codacy-analysis.yml
index 03880e7..60027e4 100644
--- a/.github/workflows/codacy-analysis.yml
+++ b/.github/workflows/codacy-analysis.yml
@@ -29,7 +29,7 @@ jobs:
     steps:
       # Checkout the repository to the GitHub Actions runner
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
 
       # Execute Codacy Analysis CLI and generate a SARIF output with the security issues identified during the analysis
       - name: Run Codacy Analysis CLI
diff --git a/.github/workflows/sync-release-version.yml b/.github/workflows/sync-release-version.yml
index 5aff5a4..530dca9 100644
--- a/.github/workflows/sync-release-version.yml
+++ b/.github/workflows/sync-release-version.yml
@@ -8,7 +8,7 @@ jobs:
   update-version:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
         with:
           fetch-depth: 0
       - name: Run release-tagger
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index aa28124..0fbd2f3 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: shellcheck
         uses: reviewdog/action-shellcheck@v1.18
   test:
@@ -28,7 +28,7 @@ jobs:
         platform: [ubuntu-latest, windows-latest, macos-latest, macos-11, windows-2022]
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: Test files has no changes
         uses: ./
         id: changed_files_not_expected
diff --git a/.github/workflows/update-readme.yml b/.github/workflows/update-readme.yml
index 9a4e87a..e8a9e4e 100644
--- a/.github/workflows/update-readme.yml
+++ b/.github/workflows/update-readme.yml
@@ -9,7 +9,7 @@ jobs:
   sync-assets:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3.6.0
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
         with:
           fetch-depth: 0