diff --git a/appveyor.yml b/appveyor.yml
index a3fd51925588..0fa0c0d9bddd 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -14,6 +14,10 @@ install:
   - cmd: SET PATH=C:\python27;%PATH%
   - cmd: python script/cibuild
 
+branches:
+  only:
+    - master
+
 # disable build and test pahses
 build: off
 test: off