diff --git a/appveyor.yml b/appveyor.yml
index 9b62786..14442df 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,7 @@
 version: 4.4.{build}
+branches:
+  only:
+    - master
 pull_requests:
   do_not_increment_build_number: true
 skip_tags: true