diff --git a/.appveyor.yml b/.appveyor.yml
index e2fe988e7e55..e51feb918675 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -6,7 +6,7 @@ configuration:  # a trick to construct a build matrix with multiple Python versi
   - '3.7'
 
 # only build pull requests and
-# commits to 'master'
+# commits to 'master' or any branch starting with 'release'
 branches:
   only:
     - master