diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index f5e7751..ae6e01f 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
         with:
           clean: true
           fetch-depth: 1