diff --git a/.github/workflows/runtests.yml b/.github/workflows/runtests.yml
index 70cb1b6..d80302c 100644
--- a/.github/workflows/runtests.yml
+++ b/.github/workflows/runtests.yml
@@ -1,5 +1,9 @@
 name: Run Tests
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 jobs:
   build:
     name: Run tests