diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 18fc1ad8..289adb89 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -2,6 +2,9 @@ name: Flask CI
 
 on:
   push:
+    branches: [main]
+  pull_request:
+    types: [opened, synchronize]
   workflow_dispatch:
 
 jobs: