diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index c3fabbff..92b353f4 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -1,4 +1,8 @@
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 
 name: CI