diff --git a/setup.cfg b/setup.cfg
index 662179b..5c9ff43 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = Flask-Migrate
-version = 4.0.5
+version = 4.0.6.dev0
 author = Miguel Grinberg
 author_email = miguel.grinberg@gmail.com
 license = MIT