diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 8f2ea31..0b54847 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -1,5 +1,9 @@
 name: run-tests
-on: [push]
+on:
+  pull_request:
+  push:
+    branches:
+      - main
 jobs:
   build:
     runs-on: ubuntu-latest