diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index f424a69..1713a7d 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -1,6 +1,12 @@
 name: Build
 
-on: [push]
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+    branches:
+    - master
 
 jobs:
   all: