diff --git a/.github/workflows/continuous_delivery.yaml b/.github/workflows/continuous_delivery.yaml
index 09301b6..68912d1 100644
--- a/.github/workflows/continuous_delivery.yaml
+++ b/.github/workflows/continuous_delivery.yaml
@@ -24,7 +24,7 @@ jobs:
       id-token: write
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.2
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6
diff --git a/.github/workflows/continuous_integration.yml b/.github/workflows/continuous_integration.yml
index c202733..b1dd510 100644
--- a/.github/workflows/continuous_integration.yml
+++ b/.github/workflows/continuous_integration.yml
@@ -13,7 +13,7 @@ jobs:
         python-version: ["3.14"]  # Add more Python versions to test here
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.2
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6