diff --git a/.github/workflows/test-build.yml b/.github/workflows/test-build.yml
index 51d5f09a..d6e67a59 100644
--- a/.github/workflows/test-build.yml
+++ b/.github/workflows/test-build.yml
@@ -29,7 +29,7 @@ jobs:
     steps:
       # Setup
       - name: Check out
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # checkout full history for site generation
           submodules: recursive
diff --git a/.github/workflows/validate-renovate-config.yml b/.github/workflows/validate-renovate-config.yml
index ded8b7e9..f8b58bd1 100644
--- a/.github/workflows/validate-renovate-config.yml
+++ b/.github/workflows/validate-renovate-config.yml
@@ -14,7 +14,7 @@ jobs:
     if: "${{ github.event_name != 'pull_request' || github.repository != github.event.pull_request.head.repo.full_name }}"
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: suzuki-shunsuke/github-action-renovate-config-validator@v0.1.3
       with:
         config_file_path: renovate.json