diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 88ebf59..34433b5 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -1,6 +1,10 @@
 name: Tests
 
-on: [push]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 
 jobs:
   kondo: