diff --git a/README.rst b/README.rst
index 0b8f8f0..03c97fa 100644
--- a/README.rst
+++ b/README.rst
@@ -9,11 +9,12 @@ pip install mds-account-invoice-xrechnung
 
 Requires
 ========
-- Tryton 6.0
+- Tryton 6.8
 
 Changes
 =======
 
-*6.0.0 - 18.10.2022*
+*6.8.3 - 30.06.2023*
 
-- init
+- compatiblity to Tryton 6.8
+- code optimized
diff --git a/setup.py b/setup.py
index a58ed01..fce9670 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', []):
diff --git a/tryton.cfg b/tryton.cfg
index 27e058c..93c8304 100644
--- a/tryton.cfg
+++ b/tryton.cfg
@@ -1,5 +1,5 @@
 [tryton]
-version=6.0.0
+version=6.8.3
 depends:
     account_invoice
     bank
diff --git a/versiondep.txt b/versiondep.txt
index 7e6131c..0785719 100644
--- a/versiondep.txt
+++ b/versiondep.txt
@@ -1 +1 @@
-edocument_xrechnung;6.6.1;6.6.999;mds
+edocument_xrechnung;6.8.2;6.8.999;mds