diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c26e6b9..a01165e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
       id-token: write
       contents: read
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.3
 
       - name: Setup Node.js
         uses: actions/setup-node@v6