diff --git a/README.rst b/README.rst
index 83d5baa..c3b7389 100644
--- a/README.rst
+++ b/README.rst
@@ -9,7 +9,7 @@ pip install mds-cashbook
 
 Requires
 ========
-- Tryton 6.0
+- Tryton 6.8
 
 How to
 ======
@@ -153,6 +153,6 @@ currency are converted  into the display currency of the parent cash book.
 Changes
 =======
 
-*6.0.0 - 05.08.2022*
+*6.8.28 - 05.06.2023*
 
 - init
diff --git a/setup.py b/setup.py
index ff59617..0552dca 100644
--- a/setup.py
+++ b/setup.py
@@ -40,7 +40,7 @@ with open(path.join(here, 'versiondep.txt'), encoding='utf-8') as f:
 
 # tryton-version
 major_version = 6
-minor_version = 0
+minor_version = 8
 
 requires = ['python-slugify']
 for dep in info.get('depends', []):
@@ -89,6 +89,7 @@ setup(name='%s_%s' % (PREFIX, MODULE),
     'License :: OSI Approved :: GNU General Public License (GPL)',
     'Programming Language :: Python :: 3.7',
     'Programming Language :: Python :: 3.8',
+    'Programming Language :: Python :: 3.9',
     ],
 
     keywords='tryton cashbook',
diff --git a/tryton.cfg b/tryton.cfg
index ea57ba7..2df358a 100644
--- a/tryton.cfg
+++ b/tryton.cfg
@@ -1,5 +1,5 @@
 [tryton]
-version=6.0.0
+version=6.8.28
 depends:
     res
     currency