diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 0c859a7..e927c8e 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -30,7 +30,7 @@ jobs:
     continue-on-error: ${{ matrix.ruby == 'head' }}
     name: Ruby ${{ matrix.ruby }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}