diff --git a/CHANGELOG b/CHANGELOG
index 35cef70db9..6048404e63 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,5 @@
+Version 6.4.0 - 2022-05-02
+* Bug fixes (see mercurial logs for details)
 * Add support for Python 3.10
 * Remove support for Python 3.6
 
diff --git a/COPYRIGHT b/COPYRIGHT
index 6bb3f259d3..c5e4bb7bc0 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -1,6 +1,6 @@
-Copyright (C) 2006-2021 Cédric Krier.
+Copyright (C) 2006-2022 Cédric Krier.
 Copyright (C) 2009-2012 Bertrand Chenal.
-Copyright (C) 2009-2021 B2CK SPRL.
+Copyright (C) 2009-2022 B2CK SPRL.
 Copyright (C) 2008-2012 Udo Spallek.
 Copyright (C) 2008-2011 virtual things.
 
diff --git a/tryton.cfg b/tryton.cfg
index cf8777712c..6d937f2401 100644
--- a/tryton.cfg
+++ b/tryton.cfg
@@ -1,5 +1,5 @@
 [tryton]
-version=6.3.0
+version=6.4.0
 depends:
     ir
     res