diff --git a/CHANGELOG b/CHANGELOG
index e7406aefc7..8a8ac5f5d0 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+Version 6.6.0 - 2022-10-31
+--------------------------
+* Bug fixes (see mercurial logs for details)
 * Support authentication services
 
 Version 6.4.0 - 2022-05-02
diff --git a/tryton/__init__.py b/tryton/__init__.py
index 2da6579c71..0d907d3cd6 100644
--- a/tryton/__init__.py
+++ b/tryton/__init__.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.
-__version__ = "6.5.0"
+__version__ = "6.6.0"
 import locale
 
 import gi