diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 23b36ae..1b459ae 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -69,7 +69,7 @@ jobs:
       - run: idoc
 
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           commit_message: ${{ github.event.head_commit.message }}
           github_token: ${{ secrets.GITHUB_TOKEN }}