diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 7d854eca6..b4fba9450 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -1,10 +1,8 @@
 name: pull request - build and unit tests
 
 on:
-  push:
-    branches: [ main ]
   pull_request:
-    branches: [ main ]
+    branches: [ '*' ]
 
 jobs:
   unit-tests: