diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index fa34b25f..a80b5136 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -1,5 +1,7 @@
 name: on push
-on: [push]
+on:
+  push: { branches: [main] }
+  pull_request: { branches: [main] }
 
 jobs:
   lint: # fail-fast on linting