diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 74a5e2d..b8c4a25 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,11 +1,7 @@
 name: Build
 
 on:
-  push:
-    branches:
-      - '*'
-      - '!gh-pages'
-      - '!master'
+  - pull_request
 
 jobs:
   build: