diff --git a/.github/workflows/deploy-to-gh-pages.yml b/.github/workflows/deploy-to-gh-pages.yml
index 0e9ef97..21c7c00 100644
--- a/.github/workflows/deploy-to-gh-pages.yml
+++ b/.github/workflows/deploy-to-gh-pages.yml
@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3.1.0
         with:
           ref: ${{ github.head_ref }}