diff --git a/appveyor.yml b/appveyor.yml
index 2e166ef877..4610033b4e 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 1.65.{build}
+version: 1.66.{build}
 pull_requests:
   do_not_increment_build_number: true
 skip_tags: true