diff --git a/appveyor.yml b/appveyor.yml
index e1e4acc..92dd21f 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 0.3.0.{build}-{branch}
+version: 0.3.0_b{build}-{branch}
 
 os: Windows Server 2012