diff --git a/.github/workflows/policy.yaml b/.github/workflows/policy.yaml
index 43957f3..bc71dee 100644
--- a/.github/workflows/policy.yaml
+++ b/.github/workflows/policy.yaml
@@ -16,7 +16,7 @@ jobs:
     name: Check merge commits
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 0
     - run: |
@@ -34,7 +34,7 @@ jobs:
     name: Check commit message style
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 0
     - uses: actions/setup-node@v6
@@ -48,7 +48,7 @@ jobs:
     name: Check ReStructuredText style
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions/setup-python@v6
       with:
         python-version: "3.10"
@@ -60,7 +60,7 @@ jobs:
     name: Check YAML style
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions/setup-python@v6
       with:
         python-version: "3.10"
diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index 1ba0bda..4c12755 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -9,7 +9,7 @@ jobs:
     name: Publish to PyPI
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions/setup-python@v6
       with:
         python-version: "3.10"
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index ab60336..e99e3bb 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -17,7 +17,7 @@ jobs:
         - "3.10"
         - "3.9"
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python }}