diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 86ba4d2..e3c29c3 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -20,7 +20,7 @@ jobs:
         language: [ 'python' ]
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v3
       with:
diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index da60940..7c41ae7 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -17,7 +17,7 @@ jobs:
       matrix:
         python-version: ['3.11', '3.12', '3.13']
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5
       with:
@@ -45,7 +45,7 @@ jobs:
     runs-on: ubuntu-24.04
     if: github.event_name == 'pull_request'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Run tests
         run: docker build . --file Dockerfile
   # Push image to GitHub Packages.
@@ -56,7 +56,7 @@ jobs:
     runs-on: ubuntu-24.04
     if: github.event_name == 'push'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with: