diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 67992d8..c320e94 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -20,6 +20,7 @@ jobs:
       matrix:
         os: [ubuntu-latest]
     environment:
+      if: github.ref == 'refs/heads/main'
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}
     runs-on: ${{matrix.os}}