diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index b2674cd..d534868 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -25,7 +25,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.
diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index fb2b8d0..dd6f242 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -17,7 +17,7 @@ jobs:
       matrix:
         python-version: [3.7, 3.8, 3.9]
     steps:
-    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
+    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4.7.1
       with: