diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index d8c36be..17cde4e 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -1,6 +1,9 @@
 name: deploy
 
-on: [push]
+on:
+  push:
+    branches:
+      - master
 
 jobs:
   test: