diff --git a/CHANGELOG b/CHANGELOG
index 0e562d2baa..0f1acf5585 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,5 @@
+Version 6.4.0 - 2022-05-02
+* Bug fixes (see mercurial logs for details)
 * Use unittest discover
 * Add module tutorial
 * Test all XML view and SVG icon files are used
diff --git a/COPYRIGHT b/COPYRIGHT
index 387dc32f5a..87f09dbd4f 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -1,9 +1,9 @@
 Copyright (C) 2004-2008 Tiny SPRL.
-Copyright (C) 2007-2021 Cédric Krier.
+Copyright (C) 2007-2022 Cédric Krier.
 Copyright (C) 2007-2013 Bertrand Chenal.
-Copyright (C) 2008-2021 B2CK SPRL.
+Copyright (C) 2008-2022 B2CK SPRL.
 Copyright (C) 2011 Openlabs Technologies & Consulting (P) Ltd.
-Copyright (C) 2011-2021 Nicolas Évrard.
+Copyright (C) 2011-2022 Nicolas Évrard.
 Copyright (C) 2020-2021 Maxime Richez
 Copyright (C) 2020-2021 SALUC SA
 
diff --git a/trytond/__init__.py b/trytond/__init__.py
index 407ebc4201..011e6e6fb0 100644
--- a/trytond/__init__.py
+++ b/trytond/__init__.py
@@ -7,7 +7,7 @@ from email import charset
 
 from lxml import etree, objectify
 
-__version__ = "6.3.0"
+__version__ = "6.4.0"
 
 os.environ['TZ'] = 'UTC'
 if hasattr(time, 'tzset'):