diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 52d08b8..017e1a7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,6 +1,12 @@
 name: Haskell CI
 
-on: [pull_request]
+on:
+  pull_request:
+    branches:
+      - "**"
+  push:
+    branches:
+      - "master"
 
 jobs:
   build: