diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 304258e..d6de642 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,4 +1,10 @@
-on: push
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
 
 name: CI