diff --git a/doc/source/conf.py b/doc/source/conf.py
index e9317c3..8b6f1c7 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -37,7 +37,7 @@ def __getattr__(cls, name):
 author = 'Ruihua Han'
 
 # The full version, including alpha/beta/rc tags
-release = '2.3.0'
+release = '2.3'
 
 # print(os.path.abspath('../../'))
 # sys.path.insert(0, os.path.abspath('../../'))