diff --git a/.github/workflows/documentation.yaml b/.github/workflows/documentation.yaml
index 28fad61..26193d6 100644
--- a/.github/workflows/documentation.yaml
+++ b/.github/workflows/documentation.yaml
@@ -17,7 +17,7 @@ jobs:
         run: |
           sphinx-build doc _build
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@3.9.3
+        uses: peaceiris/actions-gh-pages@v3.9.3
         if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
         with:
           publish_branch: gh-pages