diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 4d5ce7b..4e1a7c3 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -10,6 +10,7 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    if: github.event.repository.fork == false
     steps:
       - uses: actions/checkout@v2