diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index be20ff8..a63bd33 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,4 +1,4 @@
-on: [push]
+on: [push, pull_request]
 
 jobs:
   stc_rpncalc_ci_job: