diff --git a/appveyor.yml b/appveyor.yml
index 8e33549c7..6a04293aa 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,5 +1,9 @@
 version: "{build}"
 
+branches:
+  only:
+    - master
+
 skip_tags: true
 clone_folder: c:\projects\atom
 clone_depth: 10