diff --git a/appveyor.yml b/appveyor.yml
index 846f573..5d09b58 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,5 +1,8 @@
 environment:
   nodejs_version: "4.0"
+branches:
+  only:
+    - master
 install:
   - ps: Install-Product node $env:nodejs_version
   - npm run bootstrap