diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a5f4ec4..c52ed61 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Check built Python package
@@ -60,7 +60,7 @@ jobs:
             pdm-version: ""
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: pdm-project/setup-pdm@v4
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 0315f39..a6d27df 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -13,7 +13,7 @@ jobs:
       id-token: write
       contents: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: pdm-project/setup-pdm@v4
       - name: Publish package distributions to PyPI
         run: pdm publish
diff --git a/.github/workflows/sync_python_deps.yml b/.github/workflows/sync_python_deps.yml
index 8df0d93..ab49610 100644
--- a/.github/workflows/sync_python_deps.yml
+++ b/.github/workflows/sync_python_deps.yml
@@ -15,7 +15,7 @@ jobs:
   update-dependencies:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Update dependencies with PDM
         uses: pdm-project/update-deps-action@main