diff --git a/appveyor.yml b/appveyor.yml
index dd6c2e9..8ab8f48 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,6 +1,9 @@
 version: 1.0.0.{build}
 pull_requests:
   do_not_increment_build_number: true
+branches:
+  only:
+  - master
 image: Visual Studio 2015
 configuration: Release
 assembly_info: