diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 78bdb2a..5ea46f7 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,6 +1,10 @@
 name: Build and test
 
-on: [push]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 
 jobs:
   build: