diff --git a/l10n_cs/__init__.py b/l10n_cs/__init__.py
index f71423d..6935188 100644
--- a/l10n_cs/__init__.py
+++ b/l10n_cs/__init__.py
@@ -1,7 +1,8 @@
 # -*- encoding: utf-8 -*-
 ##############################################################################
 #
-#    Copyright (C) 2018 PERLUR Group (<https://go.perlur.cloud/odoo-packages/>).
+#    Copyright (C) 2012 - 2018 PERLUR Group (<https://go.perlur.cloud/opensource>).
+#    Copyright (C) 2018 Optimal 4 s.r.o. (<https://www.optimal4.cz>).
 #
 #    This program is free software: you can redistribute it and/or modify
 #    it under the terms of the GNU Affero General Public License as
@@ -18,8 +19,4 @@
 #
 ##############################################################################
 
-def _preserve_tag_on_taxes(cr, registry):
-    from odoo.addons.account.models.chart_template import preserve_existing_tags_on_taxes
-    preserve_existing_tags_on_taxes(cr, registry, 'l10n_cs')
-
-import res_partner
+from . import models
\ No newline at end of file
diff --git a/l10n_cs/__manifest__.py b/l10n_cs/__manifest__.py
index 42dad32..b2c1169 100644
--- a/l10n_cs/__manifest__.py
+++ b/l10n_cs/__manifest__.py
@@ -1,7 +1,8 @@
 # -*- encoding: utf-8 -*-
 ##############################################################################
 #
-#    Copyright (C) 2012 - 2017 PERLUR Group (<https://go.perlur.cloud/odoo-l10n-cs>).
+#    Copyright (C) 2012 - 2018 PERLUR Group (<https://go.perlur.cloud/opensource>).
+#    Copyright (C) 2018 Optimal 4 s.r.o. (<https://www.optimal4.cz>).
 #
 #    This program is free software: you can redistribute it and/or modify
 #    it under the terms of the GNU Affero General Public License as
@@ -21,26 +22,26 @@
 
 {
     'name': 'Czech - Accounting',
-    'version': '2.0',
+    'version': '2.1',
     'category': 'Accounting',
     'description': """
 This is the latest Czech Odoo (OpenERP) localisation necessary to run Odoo accounting for Czech businesses with:
 ============================================================================================================
     - a Chart Of Accounts for Czech Republic
-    - VAT tax structure with VATs for years 2010, 2011, 2012, 2013 and 2014
+    - VAT tax structure with VATs for years 2018
     - a few other adaptations""",
     'author': 'PERLUR Group and Optimal4',
     'price': '100',
     'currency': 'EUR',
     'website': 'https://go.perlur.cloud/odoo-packages/',
-    'depends': ['base_iban', 'base_vat', 'l10n_multilang'],
+    'depends': ['account', 'base_iban', 'base_vat', 'l10n_multilang', 'contacts'],
     'data': [
         'partner_view.xml',
         'data/account_type.xml',
         'data/account_template_entrepreneurs.xml',
         'data/account_tax_code.xml',
         'data/account_chart.xml',
-        'data/account_tax.xml',
+        'data/account_tax_data.xml',
         'data/account_fiscal_templates.xml',
         'wizard/l10n_cs_wizard.xml',
     ],
diff --git a/l10n_cs/data/account_tax.xml b/l10n_cs/data/account_tax_data.xml
similarity index 100%
rename from l10n_cs/data/account_tax.xml
rename to l10n_cs/data/account_tax_data.xml
diff --git a/l10n_cs/models/models.py b/l10n_cs/models/models.py
index e720793..b10eb3a 100644
--- a/l10n_cs/models/models.py
+++ b/l10n_cs/models/models.py
@@ -1,7 +1,8 @@
 # -*- encoding: utf-8 -*-
 ##############################################################################
 #
-#    Copyright (C) 2012 STOPKA Consulting s.r.o. (<https://www.perlur.cz/en/it-solutions/business-applications/openerp-en/>).
+#    Copyright (C) 2012 - 2018 PERLUR Group (<https://go.perlur.cloud/opensource>).
+#    Copyright (C) 2018 Optimal 4 s.r.o. (<https://www.optimal4.cz>).
 #
 #    This program is free software: you can redistribute it and/or modify
 #    it under the terms of the GNU Affero General Public License as
@@ -18,14 +19,5 @@
 #
 ##############################################################################
 
-from openerp.osv import fields, osv
-
-class res_partner(osv.osv):
-    _inherit = 'res.partner'
-
-    _columns = {
-        'company_registry': fields.char('Company Registry', size=64),
-    }
-
-res_partner()
-
+ from odoo import models, fields, api
+ 
\ No newline at end of file
diff --git a/l10n_cs/models/res_partner.py b/l10n_cs/models/res_partner.py
index a6938f6..ca88401 100644
--- a/l10n_cs/models/res_partner.py
+++ b/l10n_cs/models/res_partner.py
@@ -18,14 +18,11 @@
 #
 ##############################################################################
 
-from openerp.osv import fields, osv
+from odoo import models, fields, api
 
-class res_partner(osv.osv):
-    _name = 'res.partner'
-    _inherit = 'res.partner'
-
-    _columns = {
-        'company_registry': fields.char('Company Registry', size=64),
-    }
-
-res_partner()
+class ResPartner(models.Model):
+	_inherit = 'res.partner'
+	company_registry = fields.Char('Company Registry')
+		@api.model
+	def _company_registry(self):
+		return super(ResPartner, self)._company_registry() + ['company_registry']