diff --git a/README.rst b/README.rst
index ab62e82..81c20ab 100644
--- a/README.rst
+++ b/README.rst
@@ -9,11 +9,11 @@ pip install mds-cashbook-media
 
 Requires
 ========
-- Tryton 6.0
+- Tryton 6.8
 
 Changes
 =======
 
-*6.0.0 - 14.10.2022*
+*6.8.4 - 06.06.2023*
 
-- init
+- ported to Tryton 6.8
diff --git a/setup.py b/setup.py
index bc4536e..0ea81af 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-magic>=0.4.24', 'Pillow']
 for dep in info.get('depends', []):
@@ -96,6 +96,7 @@ setup(
         '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 pdf png image file',
diff --git a/tests/__init__.py b/tests/__init__.py
index f5920f2..4effdfa 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1,17 +1,2 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-
-import trytond.tests.test_tryton
-import unittest
-
-from .test_line import LineTestCase
-
-
-__all__ = ['suite']
-
-
-def suite():
-    suite = trytond.tests.test_tryton.suite()
-    suite.addTests(unittest.TestLoader().loadTestsFromTestCase(
-        LineTestCase))
-    return suite
diff --git a/tests/test_line.py b/tests/test_line.py
index e934698..a6fbe1d 100644
--- a/tests/test_line.py
+++ b/tests/test_line.py
@@ -8,7 +8,7 @@ from PIL import Image
 from trytond.tests.test_tryton import with_transaction
 from trytond.pool import Pool
 from trytond.exceptions import UserError
-from trytond.modules.cashbook.tests import CashbookTestCase
+from trytond.modules.cashbook.tests.test_module import CashbookTestCase
 from datetime import date
 from decimal import Decimal
 from .img_data import img_data_png, dok_data_pdf, text_data
diff --git a/tryton.cfg b/tryton.cfg
index f603792..d63f0eb 100644
--- a/tryton.cfg
+++ b/tryton.cfg
@@ -1,5 +1,5 @@
 [tryton]
-version=6.0.0
+version=6.8.4
 depends:
     cashbook
 xml:
diff --git a/versiondep.txt b/versiondep.txt
index 7a98af6..56d4ce7 100644
--- a/versiondep.txt
+++ b/versiondep.txt
@@ -1 +1 @@
-cashbook;6.0.18;6.0.999;mds
+cashbook;6.8.28;6.8.999;mds