diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3fa266f..6d3eec3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,7 +37,7 @@ jobs:
         mdbook build
 
     - name: Push docs
-      uses: peaceiris/actions-gh-pages@v3
+      uses: peaceiris/actions-gh-pages@v4
       if: ${{ github.ref == 'refs/heads/main' }}
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}