diff --git a/src/pydolphinscheduler/__init__.py b/src/pydolphinscheduler/__init__.py
index 6ba2585..22f5299 100644
--- a/src/pydolphinscheduler/__init__.py
+++ b/src/pydolphinscheduler/__init__.py
@@ -17,4 +17,4 @@
 
 """Init root of pydolphinscheduler."""
 
-__version__ = "4.0.1"
+__version__ = "4.0.2a1"