diff --git a/.cirrus.yml b/.cirrus.yml
index efd9c5745c1..f9f79eb8489 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -1,3 +1,4 @@
+only_if: $CIRRUS_BRANCH == $CIRRUS_DEFAULT_BRANCH
 task:
   name: Windows build
   windows_container: