diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 300e4e7..2862fa8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,6 @@ jobs:
   lint-and-test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.2.2
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
       - uses: ruby/setup-ruby@v1
       - run: ./script/test