diff --git a/.github/workflows/apply-precommit.yml b/.github/workflows/apply-precommit.yml
index ba1f757..eb2ac4c 100644
--- a/.github/workflows/apply-precommit.yml
+++ b/.github/workflows/apply-precommit.yml
@@ -13,12 +13,12 @@ jobs:
       contents: write        # needed to push commit
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Set up Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:
           python-version: '3.x'
 
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 10cc6d5..e54ed1c 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
       - name: Test if the documentation will render without warnings
         run: |
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 24226b2..e1bd391 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -16,7 +16,7 @@ jobs:
           - '8.4'
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
       - name: Lint PHP
         run: Build/Scripts/runTests.sh -p ${{ matrix.php }} -s lint
@@ -28,7 +28,7 @@ jobs:
       php: '8.2'
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
       - name: Install testing system
         run: Build/Scripts/runTests.sh -p ${{ env.php }} -s composerUpdate