diff --git a/.isort.cfg b/.isort.cfg
new file mode 100644
index 0000000000..e1c6495da9
--- /dev/null
+++ b/.isort.cfg
@@ -0,0 +1,3 @@
+[settings]
+multi_line_output=4
+known_first_party=trytond
diff --git a/__init__.py b/__init__.py
index f2dfada3b9..a12316a285 100644
--- a/__init__.py
+++ b/__init__.py
@@ -2,6 +2,7 @@
 # this repository contains the full copyright notices and license terms.
 
 from trytond.pool import Pool
+
 from . import forecast
 
 
diff --git a/forecast.py b/forecast.py
index 47f55a1131..f50d507dc7 100644
--- a/forecast.py
+++ b/forecast.py
@@ -2,21 +2,21 @@
 # this repository contains the full copyright notices and license terms.
 
 import datetime
-from dateutil.relativedelta import relativedelta
 import itertools
 
+from dateutil.relativedelta import relativedelta
 from sql import Null
 from sql.aggregate import Sum
 from sql.conditionals import Coalesce
 
 from trytond.i18n import gettext
-from trytond.model import ModelView, Workflow, ModelSQL, fields, Unique
+from trytond.model import ModelSQL, ModelView, Unique, Workflow, fields
 from trytond.model.exceptions import AccessError
-from trytond.wizard import Wizard, StateView, StateTransition, Button
-from trytond.pyson import Not, Equal, Eval, Or, Bool, If
-from trytond.transaction import Transaction
 from trytond.pool import Pool
-from trytond.tools import reduce_ids, grouped_slice
+from trytond.pyson import Bool, Equal, Eval, If, Not, Or
+from trytond.tools import grouped_slice, reduce_ids
+from trytond.transaction import Transaction
+from trytond.wizard import Button, StateTransition, StateView, Wizard
 
 from .exceptions import ForecastValidationError
 
diff --git a/setup.py b/setup.py
index e412fff793..d1352a6da9 100755
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,8 @@ import io
 import os
 import re
 from configparser import ConfigParser
-from setuptools import setup, find_packages
+
+from setuptools import find_packages, setup
 
 
 def read(fname):
diff --git a/tests/test_stock_forecast.py b/tests/test_stock_forecast.py
index 2d1aa3a800..c3371ba7bf 100644
--- a/tests/test_stock_forecast.py
+++ b/tests/test_stock_forecast.py
@@ -1,16 +1,17 @@
 # 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 datetime
 import unittest
 from decimal import Decimal
-import datetime
+
 from dateutil.relativedelta import relativedelta
+
 import trytond.tests.test_tryton
+from trytond.modules.company.tests import (
+    CompanyTestMixin, create_company, set_company)
+from trytond.pool import Pool
 from trytond.tests.test_tryton import ModuleTestCase, with_transaction
 from trytond.transaction import Transaction
-from trytond.pool import Pool
-
-from trytond.modules.company.tests import (
-    create_company, set_company, CompanyTestMixin)
 
 
 class StockForecastTestCase(CompanyTestMixin, ModuleTestCase):