diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index 458527e..6ccaee3 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -18,7 +18,7 @@ jobs:
         python-version: [3.9, "3.10", 3.11, 3.12, 3.13]
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
index 7efccfb..99922c3 100644
--- a/.github/workflows/python-publish.yml
+++ b/.github/workflows/python-publish.yml
@@ -19,7 +19,7 @@ jobs:
       url: https://pypi.org/p/opengsq
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Set up Python
       uses: actions/setup-python@v6
diff --git a/.github/workflows/sphinx-gh-pages.yml b/.github/workflows/sphinx-gh-pages.yml
index a28a457..614ff06 100644
--- a/.github/workflows/sphinx-gh-pages.yml
+++ b/.github/workflows/sphinx-gh-pages.yml
@@ -35,7 +35,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup Pages
         uses: actions/configure-pages@v5