diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2df0f41..0afdc35 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
       - name: Use Node.js
         uses: actions/setup-node@v4.2
         with: