diff --git a/.github/workflows/litmus-tests.yml b/.github/workflows/litmus-tests.yml
index b9a1df05b..06292eb8f 100644
--- a/.github/workflows/litmus-tests.yml
+++ b/.github/workflows/litmus-tests.yml
@@ -1,6 +1,10 @@
 name: llvm-zorg testing
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - main
+  pull_request:
 
 permissions:
   contents: read