diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9081338b3e..e68ffa904b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,7 +38,7 @@ jobs:
           - { os: windows-latest , ruby: truffleruby-head }
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-java@v4
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 1fe055e392..4f544fba70 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Release
         run: |
           ruby \
@@ -39,7 +39,7 @@ jobs:
           - ruby
           - jruby
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
diff --git a/.github/workflows/sync-ruby.yml b/.github/workflows/sync-ruby.yml
index 29c4344914..78e94eb9e5 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