diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 9384372..c0c7b29 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -5,6 +5,9 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request' ||
+      github.event.pull_request.head.repo.full_name !=
+      github.event.pull_request.base.repo.full_name
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3