diff --git a/.appveyor.yml b/.appveyor.yml
index 7c5f68c1..2b3807e1 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -49,6 +49,10 @@ matrix:
     - image: Visual Studio 2019
       platform: x64
 
+branches:
+  only:
+    - master
+
 before_build:
   - ps: |
       mkdir build