diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2095b3c0..b863d235 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,6 +1,6 @@
 ---
 name: CI
-on: [push]
+on: [pull_request]
 env:
   macos_ci_setup_token: ${{ secrets.MACOS_CI_SETUP_TOKEN }}
   vm_name: sequoia-for-pillarbox