diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index be9974a..57790b9 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -6,7 +6,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         with:
           python-version: 3.14
diff --git a/.github/workflows/manual-versioning.yml b/.github/workflows/manual-versioning.yml
index ff82ac7..0314cfc 100644
--- a/.github/workflows/manual-versioning.yml
+++ b/.github/workflows/manual-versioning.yml
@@ -25,7 +25,7 @@ jobs:
           app-id: ${{ secrets.RELEASE_BOT_APP_ID }}
           private-key: ${{ secrets.RELEASE_BOT_PRIVATE_KEY }}
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
           token: ${{ steps.generate_token.outputs.token }}
diff --git a/.github/workflows/pypi-publish.yml b/.github/workflows/pypi-publish.yml
index e4fcdea..9add569 100644
--- a/.github/workflows/pypi-publish.yml
+++ b/.github/workflows/pypi-publish.yml
@@ -18,7 +18,7 @@ jobs:
 
     steps:
       # Publish mkdocs-techdocs-core to PyPI
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@master
         with:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b7ba2c8..9905381 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
       matrix:
         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/validate-renovate.yml b/.github/workflows/validate-renovate.yml
index 5ccae6b..5e9a37c 100644
--- a/.github/workflows/validate-renovate.yml
+++ b/.github/workflows/validate-renovate.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Validate
         uses: rinchsan/renovate-config-validator@v0.2.0
         with: