diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index 6bed9c0..606ca39 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -26,7 +26,7 @@ jobs:
 
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3
-        if: ${{ github.ref == 'refs/heads/main' }}
+        if: ${{ github.ref == 'refs/heads/master' }}
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./book