diff --git a/.github/workflows/test-suite.yml b/.github/workflows/test-suite.yml
index 78c25cc20..f1e556626 100644
--- a/.github/workflows/test-suite.yml
+++ b/.github/workflows/test-suite.yml
@@ -1,6 +1,10 @@
 name: test-suite
 
-on: [push]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 
 jobs:
   cargo-fmt: