diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1921762..858dfa9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
         ruby-version: ["3.3", "3.2", "3.1", "3.0", "jruby-head"]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Set up Ruby ${{ matrix.ruby-version }}
         uses: ruby/setup-ruby@v1
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 878e95b..a9acfe9 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,7 +14,7 @@ jobs:
           package-name: norma43_parser
           bump-minor-pre-major: true
           version-file: 'lib/norma43/version.rb'
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         if: ${{ steps.release.outputs.release_created }}
       - uses: ruby/setup-ruby@v1
         with: