diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 0596398..be717c4 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -22,7 +22,7 @@ jobs:
       matrix:
         ruby: ${{ fromJson(needs.ruby-versions.outputs.versions) }}
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}
@@ -34,7 +34,7 @@ jobs:
   benchmark:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: 3.3.6
diff --git a/.github/workflows/sync-ruby.yml b/.github/workflows/sync-ruby.yml
index 29c4344..78e94eb 100644
--- a/.github/workflows/sync-ruby.yml
+++ b/.github/workflows/sync-ruby.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ github.repository_owner == 'ruby' }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Create GitHub App token
         id: app-token