diff --git a/src/agentscope/_version.py b/src/agentscope/_version.py
index 7121d7fc7..b850f527e 100644
--- a/src/agentscope/_version.py
+++ b/src/agentscope/_version.py
@@ -1,4 +1,4 @@
 # -*- coding: utf-8 -*-
 """ Version of AgentScope."""
 
-__version__ = "0.1.0"
+__version__ = "0.1.1.dev"