diff --git a/.github/workflows/deploy_site.yml b/.github/workflows/deploy_site.yml
index b266e69f..5987edac 100644
--- a/.github/workflows/deploy_site.yml
+++ b/.github/workflows/deploy_site.yml
@@ -32,7 +32,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v6
diff --git a/.github/workflows/link_checker.yml b/.github/workflows/link_checker.yml
index 9c953389..011946bc 100644
--- a/.github/workflows/link_checker.yml
+++ b/.github/workflows/link_checker.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v6
diff --git a/.github/workflows/lint_md_changes.yml b/.github/workflows/lint_md_changes.yml
index 99b8f949..8db349e1 100644
--- a/.github/workflows/lint_md_changes.yml
+++ b/.github/workflows/lint_md_changes.yml
@@ -13,7 +13,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 0
     - uses: tj-actions/changed-files@24d32ffd492484c1d75e0c0b894501ddb9d30d62
diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 03c2950b..5716424d 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         fetch-tags: true
     - name: Set up Python 3.12