diff --git a/docs/conf.py b/docs/conf.py
index fa6f290dc..dcd50855a 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -20,6 +20,8 @@
 import os, sys
 sys.path.insert(0, os.path.abspath("../")) # Important
 
+from tensorlayer import __shortversion__
+from tensorlayer import __version__
 
 # -- General configuration ------------------------------------------------
 
@@ -67,9 +69,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '1.8.4'
+version = __shortversion__
 # The full version, including alpha/beta/rc tags.
-release = '1.8.4'
+release = __version__
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/tensorlayer/__init__.py b/tensorlayer/__init__.py
index d93a8b0b3..1975eaa74 100644
--- a/tensorlayer/__init__.py
+++ b/tensorlayer/__init__.py
@@ -27,7 +27,8 @@
 vis = visualize
 
 # Use the following formating: (major, minor, patch, prerelease)
-VERSION = (1, 8, 4, '')
+VERSION = (1, 8, 5, 'rc0')
+__shortversion__ = '.'.join(map(str, VERSION[:3]))
 __version__ = '.'.join(map(str, VERSION[:3])) + "".join(VERSION[3:])
 
 __package_name__ = 'tensorlayer'