diff --git a/actions/github-pages/jekyll/action.yml b/actions/github-pages/jekyll/action.yml
index 2516cdd..f3b230c 100644
--- a/actions/github-pages/jekyll/action.yml
+++ b/actions/github-pages/jekyll/action.yml
@@ -39,6 +39,7 @@ runs:
         bundle exec jekyll build
 
     - name: Deploy
+      if: github.ref == 'refs/heads/main'
       # yamllint disable-line rule:line-length
       uses: peaceiris/actions-gh-pages@373f7f263a76c20808c831209c920827a82a2847 # v3
       with: