diff --git a/.github/workflows/pr-gate.yml b/.github/workflows/pr-gate.yml
index 6066ad3..c598f36 100644
--- a/.github/workflows/pr-gate.yml
+++ b/.github/workflows/pr-gate.yml
@@ -7,6 +7,10 @@ name: PR gate
 on:
   pull_request:
     branches: [main]
+  # pull_request does not run on "push branch only" — only after a PR exists (or is synced).
+  push:
+    branches-ignore:
+      - main
 
 jobs:
   build: