diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index fc886a6c6..2fc67967d 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Cleanup  # https://github.com/actions/virtual-environments/issues/2840
       run: sudo rm -rf /usr/share/dotnet && sudo rm -rf /opt/ghc && sudo rm -rf "/usr/local/share/boost" && sudo rm -rf "$AGENT_TOOLSDIRECTORY"
     - name: Build the Docker image
diff --git a/.github/workflows/undefined_names.yml b/.github/workflows/undefined_names.yml
index 65f25f8d6..276ab3071 100644
--- a/.github/workflows/undefined_names.yml
+++ b/.github/workflows/undefined_names.yml
@@ -4,7 +4,7 @@ jobs:
   undefined_names:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
       - run: pip install --upgrade pip
       - run: pip install flake8