diff --git a/.github/workflows/compiler-zoo.yml b/.github/workflows/compiler-zoo.yml
index 794ccf6a8..59d37425e 100644
--- a/.github/workflows/compiler-zoo.yml
+++ b/.github/workflows/compiler-zoo.yml
@@ -7,7 +7,7 @@
 
 name: Compiler Zoo CI
 
-on: [push]
+on: [pull_request, push]
 
 jobs:
   compiler: