diff --git a/tianshou/__init__.py b/tianshou/__init__.py
index a8f531893..f62a62df5 100644
--- a/tianshou/__init__.py
+++ b/tianshou/__init__.py
@@ -1,7 +1,7 @@
 from tianshou import data, env, utils, policy, trainer, \
     exploration
 
-__version__ = '0.2.0.post2'
+__version__ = '0.2.1'
 __all__ = [
     'env',
     'data',