diff --git a/doc/conf.py b/doc/conf.py
index a5b9b8d84c..24f1a90eca 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -48,9 +48,9 @@ copyright = (u'2008-2011, Bertrand Chenal, Cédric Krier, Ian Wilson, '
 # built documents.
 #
 # The short X.Y version.
-version = '3.0'
+version = '3.1'
 # The full version, including alpha/beta/rc tags.
-release = '3.0'
+release = '3.1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/trytond/version.py b/trytond/version.py
index 7f33a34b0e..f9f08af95f 100644
--- a/trytond/version.py
+++ b/trytond/version.py
@@ -1,6 +1,6 @@
 #This file is part of Tryton.  The COPYRIGHT file at the top level of
 #this repository contains the full copyright notices and license terms.
 PACKAGE = "trytond"
-VERSION = "3.0.0"
+VERSION = "3.1.0"
 LICENSE = "GPL-3"
 WEBSITE = "http://www.tryton.org/"