diff --git a/example/serializers.py b/example/serializers.py
index 9be6d4d7..9ed60e90 100644
--- a/example/serializers.py
+++ b/example/serializers.py
@@ -1,6 +1,7 @@
 from datetime import datetime
 
-from rest_framework import serializers as drf_serilazers, fields as drf_fields
+from rest_framework import fields as drf_fields
+from rest_framework import serializers as drf_serilazers
 
 from rest_framework_json_api import relations, serializers
 
diff --git a/example/tests/test_views.py b/example/tests/test_views.py
index 16d0e4e1..1e54c987 100644
--- a/example/tests/test_views.py
+++ b/example/tests/test_views.py
@@ -10,8 +10,8 @@
 
 from rest_framework_json_api.utils import format_resource_type
 
-from . import TestBase
 from .. import views
+from . import TestBase
 from example.factories import AuthorFactory, CommentFactory, EntryFactory
 from example.models import Author, Blog, Comment, Entry
 from example.serializers import AuthorBioSerializer, AuthorTypeSerializer, EntrySerializer
diff --git a/example/views.py b/example/views.py
index 73a9136e..06e4c2f3 100644
--- a/example/views.py
+++ b/example/views.py
@@ -12,7 +12,7 @@
 from rest_framework_json_api.filters import OrderingFilter, QueryParameterValidationFilter
 from rest_framework_json_api.pagination import JsonApiPageNumberPagination
 from rest_framework_json_api.utils import format_drf_errors
-from rest_framework_json_api.views import ModelViewSet, RelationshipView, PreloadIncludesMixin
+from rest_framework_json_api.views import ModelViewSet, PreloadIncludesMixin, RelationshipView
 
 from example.models import Author, Blog, Comment, Company, Entry, Project, ProjectType
 from example.serializers import (
diff --git a/rest_framework_json_api/django_filters/backends.py b/rest_framework_json_api/django_filters/backends.py
index 42671ca8..347acb58 100644
--- a/rest_framework_json_api/django_filters/backends.py
+++ b/rest_framework_json_api/django_filters/backends.py
@@ -4,6 +4,7 @@
 from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework.exceptions import ValidationError
 from rest_framework.settings import api_settings
+
 from rest_framework_json_api.utils import format_value
 
 
diff --git a/setup.cfg b/setup.cfg
index 0b965b30..a14ea984 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -13,6 +13,8 @@ exclude =
     migrations,
     .eggs
     .tox,
+    env
+    .venv
 
 [isort]
 indent = 4
@@ -28,6 +30,8 @@ skip=
     migrations,
     .eggs
     .tox,
+    env
+    .venv
 
 [coverage:run]
 source =