diff --git a/analytical/templatetags/analytical.py b/analytical/templatetags/analytical.py
index bc9c262..f9ca446 100644
--- a/analytical/templatetags/analytical.py
+++ b/analytical/templatetags/analytical.py
@@ -3,14 +3,13 @@ Analytical template tags and filters.
 """
 
 import logging
+from importlib import import_module
 
 from django import template
 from django.template import Node, TemplateSyntaxError
-from importlib import import_module
 
 from analytical.utils import AnalyticalException
 
-
 TAG_LOCATIONS = ['head_top', 'head_bottom', 'body_top', 'body_bottom']
 TAG_POSITIONS = ['first', None, 'last']
 TAG_MODULES = [
diff --git a/analytical/templatetags/chartbeat.py b/analytical/templatetags/chartbeat.py
index 1bdb9ab..6ab7b84 100644
--- a/analytical/templatetags/chartbeat.py
+++ b/analytical/templatetags/chartbeat.py
@@ -9,8 +9,7 @@ from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import is_internal_ip, disable_html, get_required_setting
-
+from analytical.utils import disable_html, get_required_setting, is_internal_ip
 
 USER_ID_RE = re.compile(r'^\d+$')
 INIT_CODE = """<script type="text/javascript">var _sf_startpt=(new Date()).getTime()</script>"""
diff --git a/analytical/templatetags/clickmap.py b/analytical/templatetags/clickmap.py
index 2cdaf80..16ec133 100644
--- a/analytical/templatetags/clickmap.py
+++ b/analytical/templatetags/clickmap.py
@@ -6,8 +6,7 @@ import re
 
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import is_internal_ip, disable_html, get_required_setting
-
+from analytical.utils import disable_html, get_required_setting, is_internal_ip
 
 CLICKMAP_TRACKER_ID_RE = re.compile(r'^\w+$')
 TRACKING_CODE = """
diff --git a/analytical/templatetags/clicky.py b/analytical/templatetags/clicky.py
index 71d5fba..2401a4c 100644
--- a/analytical/templatetags/clicky.py
+++ b/analytical/templatetags/clicky.py
@@ -7,9 +7,12 @@ import re
 
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import get_identity, is_internal_ip, disable_html, \
-        get_required_setting
-
+from analytical.utils import (
+    disable_html,
+    get_identity,
+    get_required_setting,
+    is_internal_ip,
+)
 
 SITE_ID_RE = re.compile(r'^\d+$')
 TRACKING_CODE = """
diff --git a/analytical/templatetags/crazy_egg.py b/analytical/templatetags/crazy_egg.py
index 5ad8a5a..49338b3 100644
--- a/analytical/templatetags/crazy_egg.py
+++ b/analytical/templatetags/crazy_egg.py
@@ -6,8 +6,7 @@ import re
 
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import is_internal_ip, disable_html, get_required_setting
-
+from analytical.utils import disable_html, get_required_setting, is_internal_ip
 
 ACCOUNT_NUMBER_RE = re.compile(r'^\d+$')
 SETUP_CODE = '<script type="text/javascript" src="{placeholder_url}">' \
diff --git a/analytical/templatetags/facebook_pixel.py b/analytical/templatetags/facebook_pixel.py
index 9ccc9ad..6634686 100644
--- a/analytical/templatetags/facebook_pixel.py
+++ b/analytical/templatetags/facebook_pixel.py
@@ -6,8 +6,7 @@ import re
 
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import get_required_setting, is_internal_ip, disable_html
-
+from analytical.utils import disable_html, get_required_setting, is_internal_ip
 
 FACEBOOK_PIXEL_HEAD_CODE = """\
 <script>
diff --git a/analytical/templatetags/gauges.py b/analytical/templatetags/gauges.py
index 648ba23..d4f9307 100644
--- a/analytical/templatetags/gauges.py
+++ b/analytical/templatetags/gauges.py
@@ -6,7 +6,7 @@ import re
 
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import is_internal_ip, disable_html, get_required_setting
+from analytical.utils import disable_html, get_required_setting, is_internal_ip
 
 SITE_ID_RE = re.compile(r'[\da-f]+$')
 TRACKING_CODE = """
diff --git a/analytical/templatetags/google_analytics_js.py b/analytical/templatetags/google_analytics_js.py
index ab92b11..59bdcfa 100644
--- a/analytical/templatetags/google_analytics_js.py
+++ b/analytical/templatetags/google_analytics_js.py
@@ -4,6 +4,7 @@ Google Analytics template tags and filters, using the new analytics.js library.
 
 import decimal
 import re
+
 from django.conf import settings
 from django.template import Library, Node, TemplateSyntaxError
 
diff --git a/analytical/templatetags/gosquared.py b/analytical/templatetags/gosquared.py
index 5b4458a..021e3f9 100644
--- a/analytical/templatetags/gosquared.py
+++ b/analytical/templatetags/gosquared.py
@@ -6,9 +6,12 @@ import re
 
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import get_identity, \
-        is_internal_ip, disable_html, get_required_setting
-
+from analytical.utils import (
+    disable_html,
+    get_identity,
+    get_required_setting,
+    is_internal_ip,
+)
 
 TOKEN_RE = re.compile(r'^\S+-\S+-\S+$')
 TRACKING_CODE = """
diff --git a/analytical/templatetags/hotjar.py b/analytical/templatetags/hotjar.py
index 5c01200..6ad2063 100644
--- a/analytical/templatetags/hotjar.py
+++ b/analytical/templatetags/hotjar.py
@@ -6,8 +6,7 @@ import re
 
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import get_required_setting, is_internal_ip, disable_html
-
+from analytical.utils import disable_html, get_required_setting, is_internal_ip
 
 HOTJAR_TRACKING_CODE = """\
 <script>
diff --git a/analytical/templatetags/hubspot.py b/analytical/templatetags/hubspot.py
index 21835ec..6aeab9f 100644
--- a/analytical/templatetags/hubspot.py
+++ b/analytical/templatetags/hubspot.py
@@ -6,8 +6,7 @@ import re
 
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import is_internal_ip, disable_html, get_required_setting
-
+from analytical.utils import disable_html, get_required_setting, is_internal_ip
 
 PORTAL_ID_RE = re.compile(r'^\d+$')
 TRACKING_CODE = """
diff --git a/analytical/templatetags/intercom.py b/analytical/templatetags/intercom.py
index fa47231..fc47376 100644
--- a/analytical/templatetags/intercom.py
+++ b/analytical/templatetags/intercom.py
@@ -10,9 +10,14 @@ import re
 from django.conf import settings
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import disable_html, get_required_setting, \
-        is_internal_ip, get_user_from_context, get_identity, \
-        get_user_is_authenticated
+from analytical.utils import (
+    disable_html,
+    get_identity,
+    get_required_setting,
+    get_user_from_context,
+    get_user_is_authenticated,
+    is_internal_ip,
+)
 
 APP_ID_RE = re.compile(r'[\da-z]+$')
 TRACKING_CODE = """
diff --git a/analytical/templatetags/kiss_insights.py b/analytical/templatetags/kiss_insights.py
index 5ec20ce..f009d8f 100644
--- a/analytical/templatetags/kiss_insights.py
+++ b/analytical/templatetags/kiss_insights.py
@@ -8,7 +8,6 @@ from django.template import Library, Node, TemplateSyntaxError
 
 from analytical.utils import get_identity, get_required_setting
 
-
 ACCOUNT_NUMBER_RE = re.compile(r'^\d+$')
 SITE_CODE_RE = re.compile(r'^[\w]+$')
 SETUP_CODE = """
diff --git a/analytical/templatetags/kiss_metrics.py b/analytical/templatetags/kiss_metrics.py
index bf2b4f8..dc91e44 100644
--- a/analytical/templatetags/kiss_metrics.py
+++ b/analytical/templatetags/kiss_metrics.py
@@ -7,9 +7,12 @@ import re
 
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import is_internal_ip, disable_html, get_identity, \
-        get_required_setting
-
+from analytical.utils import (
+    disable_html,
+    get_identity,
+    get_required_setting,
+    is_internal_ip,
+)
 
 API_KEY_RE = re.compile(r'^[0-9a-f]{40}$')
 TRACKING_CODE = """
diff --git a/analytical/templatetags/luckyorange.py b/analytical/templatetags/luckyorange.py
index 7eb6ee9..e9bba8e 100644
--- a/analytical/templatetags/luckyorange.py
+++ b/analytical/templatetags/luckyorange.py
@@ -6,8 +6,7 @@ import re
 
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import get_required_setting, is_internal_ip, disable_html
-
+from analytical.utils import disable_html, get_required_setting, is_internal_ip
 
 LUCKYORANGE_TRACKING_CODE = """\
 <script type='text/javascript'>
diff --git a/analytical/templatetags/matomo.py b/analytical/templatetags/matomo.py
index c00c5b1..15334fb 100644
--- a/analytical/templatetags/matomo.py
+++ b/analytical/templatetags/matomo.py
@@ -2,16 +2,19 @@
 Matomo template tags and filters.
 """
 
+import re
 from collections import namedtuple
 from itertools import chain
-import re
 
 from django.conf import settings
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import (is_internal_ip, disable_html,
-                              get_required_setting, get_identity)
-
+from analytical.utils import (
+    disable_html,
+    get_identity,
+    get_required_setting,
+    is_internal_ip,
+)
 
 # domain name (characters separated by a dot), optional port, optional URI path, no slash
 DOMAINPATH_RE = re.compile(r'^(([^./?#@:]+\.)*[^./?#@:]+)+(:[0-9]+)?(/[^/?#@:]+)*$')
diff --git a/analytical/templatetags/mixpanel.py b/analytical/templatetags/mixpanel.py
index 36af438..e9b95b7 100644
--- a/analytical/templatetags/mixpanel.py
+++ b/analytical/templatetags/mixpanel.py
@@ -8,9 +8,12 @@ import re
 from django.template import Library, Node, TemplateSyntaxError
 from django.utils.safestring import mark_safe
 
-from analytical.utils import is_internal_ip, disable_html, get_identity, \
-        get_required_setting
-
+from analytical.utils import (
+    disable_html,
+    get_identity,
+    get_required_setting,
+    is_internal_ip,
+)
 
 MIXPANEL_API_TOKEN_RE = re.compile(r'^[0-9a-f]{32}$')
 TRACKING_CODE = """
diff --git a/analytical/templatetags/olark.py b/analytical/templatetags/olark.py
index f3c0364..833a01f 100644
--- a/analytical/templatetags/olark.py
+++ b/analytical/templatetags/olark.py
@@ -9,7 +9,6 @@ from django.template import Library, Node, TemplateSyntaxError
 
 from analytical.utils import get_identity, get_required_setting
 
-
 SITE_ID_RE = re.compile(r'^\d+-\d+-\d+-\d+$')
 SETUP_CODE = """
     <script type='text/javascript'>
diff --git a/analytical/templatetags/optimizely.py b/analytical/templatetags/optimizely.py
index d99ca07..83e72b3 100644
--- a/analytical/templatetags/optimizely.py
+++ b/analytical/templatetags/optimizely.py
@@ -6,8 +6,7 @@ import re
 
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import is_internal_ip, disable_html, get_required_setting
-
+from analytical.utils import disable_html, get_required_setting, is_internal_ip
 
 ACCOUNT_NUMBER_RE = re.compile(r'^\d+$')
 SETUP_CODE = """<script src="//cdn.optimizely.com/js/%(account_number)s.js"></script>"""
diff --git a/analytical/templatetags/performable.py b/analytical/templatetags/performable.py
index 39e6c16..de84bcf 100644
--- a/analytical/templatetags/performable.py
+++ b/analytical/templatetags/performable.py
@@ -7,9 +7,12 @@ import re
 from django.template import Library, Node, TemplateSyntaxError
 from django.utils.safestring import mark_safe
 
-from analytical.utils import is_internal_ip, disable_html, get_identity, \
-        get_required_setting
-
+from analytical.utils import (
+    disable_html,
+    get_identity,
+    get_required_setting,
+    is_internal_ip,
+)
 
 API_KEY_RE = re.compile(r'^\w+$')
 SETUP_CODE = """
diff --git a/analytical/templatetags/piwik.py b/analytical/templatetags/piwik.py
index 8855a61..88adb9c 100644
--- a/analytical/templatetags/piwik.py
+++ b/analytical/templatetags/piwik.py
@@ -2,17 +2,20 @@
 Piwik template tags and filters.
 """
 
+import re
+import warnings
 from collections import namedtuple
 from itertools import chain
-import re
 
 from django.conf import settings
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import (is_internal_ip, disable_html,
-                              get_required_setting, get_identity)
-
-import warnings
+from analytical.utils import (
+    disable_html,
+    get_identity,
+    get_required_setting,
+    is_internal_ip,
+)
 
 # domain name (characters separated by a dot), optional port, optional URI path, no slash
 DOMAINPATH_RE = re.compile(r'^(([^./?#@:]+\.)*[^./?#@:]+)+(:[0-9]+)?(/[^/?#@:]+)*$')
diff --git a/analytical/templatetags/rating_mailru.py b/analytical/templatetags/rating_mailru.py
index c7b050a..bdcb444 100644
--- a/analytical/templatetags/rating_mailru.py
+++ b/analytical/templatetags/rating_mailru.py
@@ -6,9 +6,7 @@ import re
 
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import is_internal_ip, disable_html, \
-        get_required_setting
-
+from analytical.utils import disable_html, get_required_setting, is_internal_ip
 
 COUNTER_ID_RE = re.compile(r'^\d{7}$')
 COUNTER_CODE = """
diff --git a/analytical/templatetags/spring_metrics.py b/analytical/templatetags/spring_metrics.py
index d402846..06814fc 100644
--- a/analytical/templatetags/spring_metrics.py
+++ b/analytical/templatetags/spring_metrics.py
@@ -6,9 +6,12 @@ import re
 
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import get_identity, is_internal_ip, disable_html, \
-        get_required_setting
-
+from analytical.utils import (
+    disable_html,
+    get_identity,
+    get_required_setting,
+    is_internal_ip,
+)
 
 TRACKING_ID_RE = re.compile(r'^[0-9a-f]+$')
 TRACKING_CODE = """
diff --git a/analytical/templatetags/uservoice.py b/analytical/templatetags/uservoice.py
index 1e64e38..a7ae920 100644
--- a/analytical/templatetags/uservoice.py
+++ b/analytical/templatetags/uservoice.py
@@ -7,8 +7,8 @@ import re
 
 from django.conf import settings
 from django.template import Library, Node, TemplateSyntaxError
-from analytical.utils import get_required_setting, get_identity
 
+from analytical.utils import get_identity, get_required_setting
 
 WIDGET_KEY_RE = re.compile(r'^[a-zA-Z0-9]*$')
 TRACKING_CODE = """
diff --git a/analytical/templatetags/yandex_metrica.py b/analytical/templatetags/yandex_metrica.py
index b269c89..209514b 100644
--- a/analytical/templatetags/yandex_metrica.py
+++ b/analytical/templatetags/yandex_metrica.py
@@ -8,9 +8,7 @@ import re
 from django.conf import settings
 from django.template import Library, Node, TemplateSyntaxError
 
-from analytical.utils import is_internal_ip, disable_html, \
-        get_required_setting
-
+from analytical.utils import disable_html, get_required_setting, is_internal_ip
 
 COUNTER_ID_RE = re.compile(r'^\d{8}$')
 COUNTER_CODE = """
diff --git a/analytical/utils.py b/analytical/utils.py
index 45e0fcf..be70b70 100644
--- a/analytical/utils.py
+++ b/analytical/utils.py
@@ -5,7 +5,6 @@ Utility function for django-analytical.
 from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
 
-
 HTML_COMMENT = "<!-- %(service)s disabled on internal IP " \
                "address\n%(html)s\n-->"
 
diff --git a/setup.cfg b/setup.cfg
index 72285af..93945f8 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -8,3 +8,6 @@ upload-dir = build/docs/html
 
 [tool:pytest]
 DJANGO_SETTINGS_MODULE = tests.testproject.settings
+
+[isort]
+profile = black
diff --git a/tests/testproject/templatetags/dummy.py b/tests/testproject/templatetags/dummy.py
index 4bca645..a267c39 100644
--- a/tests/testproject/templatetags/dummy.py
+++ b/tests/testproject/templatetags/dummy.py
@@ -6,7 +6,6 @@ from django.template import Library, Node, TemplateSyntaxError
 
 from analytical.templatetags.analytical import TAG_LOCATIONS
 
-
 register = Library()
 
 
diff --git a/tests/unit/test_tag_analytical.py b/tests/unit/test_tag_analytical.py
index e037afc..037c08e 100644
--- a/tests/unit/test_tag_analytical.py
+++ b/tests/unit/test_tag_analytical.py
@@ -3,9 +3,9 @@ Tests for the generic template tags and filters.
 """
 
 from django.template import Context, Template
+from utils import TagTestCase
 
 from analytical.templatetags import analytical
-from utils import TagTestCase
 
 
 class AnalyticsTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_chartbeat.py b/tests/unit/test_tag_chartbeat.py
index c5e6493..f22f663 100644
--- a/tests/unit/test_tag_chartbeat.py
+++ b/tests/unit/test_tag_chartbeat.py
@@ -4,17 +4,15 @@ Tests for the Chartbeat template tags and filters.
 
 import re
 
+import pytest
 from django.http import HttpRequest
 from django.template import Context
 from django.test import TestCase
 from django.test.utils import override_settings
-
-from analytical.templatetags.chartbeat import ChartbeatTopNode, \
-        ChartbeatBottomNode
 from utils import TagTestCase
-from analytical.utils import AnalyticalException
 
-import pytest
+from analytical.templatetags.chartbeat import ChartbeatBottomNode, ChartbeatTopNode
+from analytical.utils import AnalyticalException
 
 
 @override_settings(CHARTBEAT_USER_ID='12345')
diff --git a/tests/unit/test_tag_clickmap.py b/tests/unit/test_tag_clickmap.py
index b6049eb..8be58cf 100644
--- a/tests/unit/test_tag_clickmap.py
+++ b/tests/unit/test_tag_clickmap.py
@@ -2,16 +2,15 @@
 Tests for the Clickmap template tags and filters.
 """
 
+import pytest
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.clickmap import ClickmapNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(CLICKMAP_TRACKER_ID='12345ABC')
 class ClickmapTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_clicky.py b/tests/unit/test_tag_clicky.py
index 2be16c8..8b40766 100644
--- a/tests/unit/test_tag_clicky.py
+++ b/tests/unit/test_tag_clicky.py
@@ -4,17 +4,16 @@ Tests for the Clicky template tags and filters.
 
 import re
 
-from django.contrib.auth.models import User, AnonymousUser
+import pytest
+from django.contrib.auth.models import AnonymousUser, User
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.clicky import ClickyNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(CLICKY_SITE_ID='12345678')
 class ClickyTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_crazy_egg.py b/tests/unit/test_tag_crazy_egg.py
index f2cab47..993f74a 100644
--- a/tests/unit/test_tag_crazy_egg.py
+++ b/tests/unit/test_tag_crazy_egg.py
@@ -2,13 +2,13 @@
 Tests for the Crazy Egg template tags and filters.
 """
 
+import pytest
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
-import pytest
+from utils import TagTestCase
 
 from analytical.templatetags.crazy_egg import CrazyEggNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
 
diff --git a/tests/unit/test_tag_facebook_pixel.py b/tests/unit/test_tag_facebook_pixel.py
index 2020257..374fa95 100644
--- a/tests/unit/test_tag_facebook_pixel.py
+++ b/tests/unit/test_tag_facebook_pixel.py
@@ -1,17 +1,19 @@
 """
 Tests for the Facebook Pixel template tags.
 """
+import pytest
 from django.http import HttpRequest
 from django.template import Context, Template, TemplateSyntaxError
 from django.test import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.analytical import _load_template_nodes
-from analytical.templatetags.facebook_pixel import FacebookPixelHeadNode, FacebookPixelBodyNode
-from utils import TagTestCase
+from analytical.templatetags.facebook_pixel import (
+    FacebookPixelBodyNode,
+    FacebookPixelHeadNode,
+)
 from analytical.utils import AnalyticalException
 
-import pytest
-
 expected_head_html = """\
 <script>
   !function(f,b,e,v,n,t,s)
diff --git a/tests/unit/test_tag_gauges.py b/tests/unit/test_tag_gauges.py
index 72d41ee..24fa8e0 100644
--- a/tests/unit/test_tag_gauges.py
+++ b/tests/unit/test_tag_gauges.py
@@ -2,16 +2,15 @@
 Tests for the Gauges template tags and filters.
 """
 
+import pytest
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.gauges import GaugesNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(GAUGES_SITE_ID='1234567890abcdef0123456789')
 class GaugesTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_google_analytics.py b/tests/unit/test_tag_google_analytics.py
index 28488c7..35220dd 100644
--- a/tests/unit/test_tag_google_analytics.py
+++ b/tests/unit/test_tag_google_analytics.py
@@ -2,18 +2,23 @@
 Tests for the Google Analytics template tags and filters.
 """
 
+import pytest
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase, TestCase
 
-from analytical.templatetags.google_analytics import GoogleAnalyticsNode, \
-        TRACK_SINGLE_DOMAIN, TRACK_MULTIPLE_DOMAINS, TRACK_MULTIPLE_SUBDOMAINS,\
-        SCOPE_VISITOR, SCOPE_SESSION, SCOPE_PAGE
-from utils import TestCase, TagTestCase
+from analytical.templatetags.google_analytics import (
+    SCOPE_PAGE,
+    SCOPE_SESSION,
+    SCOPE_VISITOR,
+    TRACK_MULTIPLE_DOMAINS,
+    TRACK_MULTIPLE_SUBDOMAINS,
+    TRACK_SINGLE_DOMAIN,
+    GoogleAnalyticsNode,
+)
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(GOOGLE_ANALYTICS_PROPERTY_ID='UA-123456-7',
                    GOOGLE_ANALYTICS_TRACKING_STYLE=TRACK_SINGLE_DOMAIN)
diff --git a/tests/unit/test_tag_google_analytics_gtag.py b/tests/unit/test_tag_google_analytics_gtag.py
index 57f4531..39e2460 100644
--- a/tests/unit/test_tag_google_analytics_gtag.py
+++ b/tests/unit/test_tag_google_analytics_gtag.py
@@ -2,17 +2,16 @@
 Tests for the Google Analytics template tags and filters, using the new gtag.js library.
 """
 
+import pytest
 from django.contrib.auth.models import User
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.google_analytics_gtag import GoogleAnalyticsGTagNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(GOOGLE_ANALYTICS_GTAG_PROPERTY_ID='UA-123456-7')
 class GoogleAnalyticsTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_google_analytics_js.py b/tests/unit/test_tag_google_analytics_js.py
index 1856e4a..ed4b216 100644
--- a/tests/unit/test_tag_google_analytics_js.py
+++ b/tests/unit/test_tag_google_analytics_js.py
@@ -2,17 +2,20 @@
 Tests for the Google Analytics template tags and filters, using the new analytics.js library.
 """
 
+import pytest
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase, TestCase
 
-from analytical.templatetags.google_analytics_js import GoogleAnalyticsJsNode, \
-    TRACK_SINGLE_DOMAIN, TRACK_MULTIPLE_DOMAINS, TRACK_MULTIPLE_SUBDOMAINS
-from utils import TestCase, TagTestCase
+from analytical.templatetags.google_analytics_js import (
+    TRACK_MULTIPLE_DOMAINS,
+    TRACK_MULTIPLE_SUBDOMAINS,
+    TRACK_SINGLE_DOMAIN,
+    GoogleAnalyticsJsNode,
+)
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(GOOGLE_ANALYTICS_JS_PROPERTY_ID='UA-123456-7',
                    GOOGLE_ANALYTICS_TRACKING_STYLE=TRACK_SINGLE_DOMAIN)
diff --git a/tests/unit/test_tag_gosquared.py b/tests/unit/test_tag_gosquared.py
index 0fa008d..46ef40d 100644
--- a/tests/unit/test_tag_gosquared.py
+++ b/tests/unit/test_tag_gosquared.py
@@ -2,17 +2,16 @@
 Tests for the GoSquared template tags and filters.
 """
 
-from django.contrib.auth.models import User, AnonymousUser
+import pytest
+from django.contrib.auth.models import AnonymousUser, User
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.gosquared import GoSquaredNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(GOSQUARED_SITE_TOKEN='ABC-123456-D')
 class GoSquaredTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_hotjar.py b/tests/unit/test_tag_hotjar.py
index 3c0ff6b..4ad0f75 100644
--- a/tests/unit/test_tag_hotjar.py
+++ b/tests/unit/test_tag_hotjar.py
@@ -1,17 +1,16 @@
 """
 Tests for the Hotjar template tags.
 """
+import pytest
 from django.http import HttpRequest
 from django.template import Context, Template, TemplateSyntaxError
 from django.test import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.analytical import _load_template_nodes
 from analytical.templatetags.hotjar import HotjarNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 expected_html = """\
 <script>
 (function(h,o,t,j,a,r){
diff --git a/tests/unit/test_tag_hubspot.py b/tests/unit/test_tag_hubspot.py
index 9ee22ba..5b980b5 100644
--- a/tests/unit/test_tag_hubspot.py
+++ b/tests/unit/test_tag_hubspot.py
@@ -2,16 +2,15 @@
 Tests for the HubSpot template tags and filters.
 """
 
+import pytest
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.hubspot import HubSpotNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(HUBSPOT_PORTAL_ID='1234')
 class HubSpotTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_intercom.py b/tests/unit/test_tag_intercom.py
index 6d76395..149dfb7 100644
--- a/tests/unit/test_tag_intercom.py
+++ b/tests/unit/test_tag_intercom.py
@@ -4,17 +4,16 @@ Tests for the intercom template tags and filters.
 
 import datetime
 
+import pytest
 from django.contrib.auth.models import User
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.intercom import IntercomNode, intercom_user_hash
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(INTERCOM_APP_ID="abc123xyz")
 class IntercomTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_kiss_insights.py b/tests/unit/test_tag_kiss_insights.py
index a2e6d18..e36e91b 100644
--- a/tests/unit/test_tag_kiss_insights.py
+++ b/tests/unit/test_tag_kiss_insights.py
@@ -2,16 +2,15 @@
 Tests for the KISSinsights template tags and filters.
 """
 
-from django.contrib.auth.models import User, AnonymousUser
+import pytest
+from django.contrib.auth.models import AnonymousUser, User
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.kiss_insights import KissInsightsNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(KISS_INSIGHTS_ACCOUNT_NUMBER='12345', KISS_INSIGHTS_SITE_CODE='abc')
 class KissInsightsTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_kiss_metrics.py b/tests/unit/test_tag_kiss_metrics.py
index bb30b29..8abc274 100644
--- a/tests/unit/test_tag_kiss_metrics.py
+++ b/tests/unit/test_tag_kiss_metrics.py
@@ -2,17 +2,16 @@
 Tests for the KISSmetrics tags and filters.
 """
 
-from django.contrib.auth.models import User, AnonymousUser
+import pytest
+from django.contrib.auth.models import AnonymousUser, User
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.kiss_metrics import KissMetricsNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(KISS_METRICS_API_KEY='0123456789abcdef0123456789abcdef01234567')
 class KissMetricsTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_luckyorange.py b/tests/unit/test_tag_luckyorange.py
index 26538fd..b22d053 100644
--- a/tests/unit/test_tag_luckyorange.py
+++ b/tests/unit/test_tag_luckyorange.py
@@ -1,17 +1,16 @@
 """
 Tests for the Lucky Orange template tags.
 """
+import pytest
 from django.http import HttpRequest
 from django.template import Context, Template, TemplateSyntaxError
 from django.test import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.analytical import _load_template_nodes
 from analytical.templatetags.luckyorange import LuckyOrangeNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 expected_html = """\
 <script type='text/javascript'>
 window.__lo_site_id = 123456;
diff --git a/tests/unit/test_tag_matomo.py b/tests/unit/test_tag_matomo.py
index c3abaec..f842d29 100644
--- a/tests/unit/test_tag_matomo.py
+++ b/tests/unit/test_tag_matomo.py
@@ -2,14 +2,14 @@
 Tests for the Matomo template tags and filters.
 """
 
+import pytest
 from django.contrib.auth.models import User
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
-import pytest
+from utils import TagTestCase
 
 from analytical.templatetags.matomo import MatomoNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
 
diff --git a/tests/unit/test_tag_mixpanel.py b/tests/unit/test_tag_mixpanel.py
index 639be42..503dff2 100644
--- a/tests/unit/test_tag_mixpanel.py
+++ b/tests/unit/test_tag_mixpanel.py
@@ -2,17 +2,16 @@
 Tests for the Mixpanel tags and filters.
 """
 
-from django.contrib.auth.models import User, AnonymousUser
+import pytest
+from django.contrib.auth.models import AnonymousUser, User
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.mixpanel import MixpanelNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(MIXPANEL_API_TOKEN='0123456789abcdef0123456789abcdef')
 class MixpanelTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_olark.py b/tests/unit/test_tag_olark.py
index 4774d31..95079f2 100644
--- a/tests/unit/test_tag_olark.py
+++ b/tests/unit/test_tag_olark.py
@@ -2,16 +2,15 @@
 Tests for the Olark template tags and filters.
 """
 
-from django.contrib.auth.models import User, AnonymousUser
+import pytest
+from django.contrib.auth.models import AnonymousUser, User
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.olark import OlarkNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(OLARK_SITE_ID='1234-567-89-0123')
 class OlarkTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_optimizely.py b/tests/unit/test_tag_optimizely.py
index 0a438ff..523c5c0 100644
--- a/tests/unit/test_tag_optimizely.py
+++ b/tests/unit/test_tag_optimizely.py
@@ -2,16 +2,15 @@
 Tests for the Optimizely template tags and filters.
 """
 
+import pytest
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.optimizely import OptimizelyNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(OPTIMIZELY_ACCOUNT_NUMBER='1234567')
 class OptimizelyTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_performable.py b/tests/unit/test_tag_performable.py
index c1e83db..a02b401 100644
--- a/tests/unit/test_tag_performable.py
+++ b/tests/unit/test_tag_performable.py
@@ -2,17 +2,16 @@
 Tests for the Performable template tags and filters.
 """
 
-from django.contrib.auth.models import User, AnonymousUser
+import pytest
+from django.contrib.auth.models import AnonymousUser, User
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.performable import PerformableNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(PERFORMABLE_API_KEY='123ABC')
 class PerformableTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_piwik.py b/tests/unit/test_tag_piwik.py
index 2306da2..c8c01e5 100644
--- a/tests/unit/test_tag_piwik.py
+++ b/tests/unit/test_tag_piwik.py
@@ -2,17 +2,16 @@
 Tests for the Piwik template tags and filters.
 """
 
+import pytest
 from django.contrib.auth.models import User
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.piwik import PiwikNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(PIWIK_DOMAIN_PATH='example.com', PIWIK_SITE_ID='345')
 class PiwikTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_rating_mailru.py b/tests/unit/test_tag_rating_mailru.py
index 5f7cf8b..16aa794 100644
--- a/tests/unit/test_tag_rating_mailru.py
+++ b/tests/unit/test_tag_rating_mailru.py
@@ -2,16 +2,15 @@
 Tests for the Rating@Mail.ru template tags and filters.
 """
 
+import pytest
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.rating_mailru import RatingMailruNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(RATING_MAILRU_COUNTER_ID='1234567')
 class RatingMailruTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_snapengage.py b/tests/unit/test_tag_snapengage.py
index a85d812..e1f6ca2 100644
--- a/tests/unit/test_tag_snapengage.py
+++ b/tests/unit/test_tag_snapengage.py
@@ -2,19 +2,25 @@
 Tests for the SnapEngage template tags and filters.
 """
 
-from django.contrib.auth.models import User, AnonymousUser
+import pytest
+from django.contrib.auth.models import AnonymousUser, User
 from django.template import Context
 from django.test.utils import override_settings
 from django.utils import translation
-
-from analytical.templatetags.snapengage import SnapEngageNode, \
-        BUTTON_STYLE_LIVE, BUTTON_STYLE_DEFAULT, BUTTON_STYLE_NONE, \
-        BUTTON_LOCATION_LEFT, BUTTON_LOCATION_RIGHT, BUTTON_LOCATION_TOP, \
-        BUTTON_LOCATION_BOTTOM, FORM_POSITION_TOP_LEFT
 from utils import TagTestCase
-from analytical.utils import AnalyticalException
 
-import pytest
+from analytical.templatetags.snapengage import (
+    BUTTON_LOCATION_BOTTOM,
+    BUTTON_LOCATION_LEFT,
+    BUTTON_LOCATION_RIGHT,
+    BUTTON_LOCATION_TOP,
+    BUTTON_STYLE_DEFAULT,
+    BUTTON_STYLE_LIVE,
+    BUTTON_STYLE_NONE,
+    FORM_POSITION_TOP_LEFT,
+    SnapEngageNode,
+)
+from analytical.utils import AnalyticalException
 
 WIDGET_ID = 'ec329c69-0bf0-4db8-9b77-3f8150fb977e'
 
diff --git a/tests/unit/test_tag_spring_metrics.py b/tests/unit/test_tag_spring_metrics.py
index 6eee86d..c362721 100644
--- a/tests/unit/test_tag_spring_metrics.py
+++ b/tests/unit/test_tag_spring_metrics.py
@@ -2,17 +2,16 @@
 Tests for the Spring Metrics template tags and filters.
 """
 
-from django.contrib.auth.models import User, AnonymousUser
+import pytest
+from django.contrib.auth.models import AnonymousUser, User
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.spring_metrics import SpringMetricsNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(SPRING_METRICS_TRACKING_ID='12345678')
 class SpringMetricsTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_uservoice.py b/tests/unit/test_tag_uservoice.py
index fcacbf9..1d60eea 100644
--- a/tests/unit/test_tag_uservoice.py
+++ b/tests/unit/test_tag_uservoice.py
@@ -2,12 +2,12 @@
 Tests for the UserVoice tags and filters.
 """
 
+import pytest
 from django.template import Context
 from django.test.utils import override_settings
-import pytest
+from utils import TagTestCase
 
 from analytical.templatetags.uservoice import UserVoiceNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
 
diff --git a/tests/unit/test_tag_woopra.py b/tests/unit/test_tag_woopra.py
index 0bfbf36..dd1536f 100644
--- a/tests/unit/test_tag_woopra.py
+++ b/tests/unit/test_tag_woopra.py
@@ -2,17 +2,16 @@
 Tests for the Woopra template tags and filters.
 """
 
-from django.contrib.auth.models import User, AnonymousUser
+import pytest
+from django.contrib.auth.models import AnonymousUser, User
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.woopra import WoopraNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(WOOPRA_DOMAIN='example.com')
 class WoopraTagTestCase(TagTestCase):
diff --git a/tests/unit/test_tag_yandex_metrica.py b/tests/unit/test_tag_yandex_metrica.py
index d9956d8..a30b58a 100644
--- a/tests/unit/test_tag_yandex_metrica.py
+++ b/tests/unit/test_tag_yandex_metrica.py
@@ -3,16 +3,15 @@ Tests for the Yandex.Metrica template tags and filters.
 """
 
 
+import pytest
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TagTestCase
 
 from analytical.templatetags.yandex_metrica import YandexMetricaNode
-from utils import TagTestCase
 from analytical.utils import AnalyticalException
 
-import pytest
-
 
 @override_settings(YANDEX_METRICA_COUNTER_ID='12345678')
 class YandexMetricaTagTestCase(TagTestCase):
diff --git a/tests/unit/test_utils.py b/tests/unit/test_utils.py
index 4ba8d33..b30307f 100644
--- a/tests/unit/test_utils.py
+++ b/tests/unit/test_utils.py
@@ -3,11 +3,13 @@ Tests for the analytical.utils module.
 """
 # import django
 
+import pytest
 from django.contrib.auth.models import AbstractBaseUser
 from django.db import models
 from django.http import HttpRequest
 from django.template import Context
 from django.test.utils import override_settings
+from utils import TestCase
 
 from analytical.utils import (
     AnalyticalException,
@@ -16,9 +18,6 @@ from analytical.utils import (
     get_required_setting,
     is_internal_ip,
 )
-from utils import TestCase
-
-import pytest
 
 
 class SettingDeletedTestCase(TestCase):
diff --git a/tests/unit/utils.py b/tests/unit/utils.py
index 75fc6fa..6008e08 100644
--- a/tests/unit/utils.py
+++ b/tests/unit/utils.py
@@ -2,7 +2,7 @@
 Testing utilities.
 """
 
-from django.template import Template, Context, RequestContext
+from django.template import Context, RequestContext, Template
 from django.test.testcases import TestCase
 
 
diff --git a/tox.ini b/tox.ini
index 850352f..7bea9f2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,7 +2,7 @@
 envlist =
     # Python/Django combinations that are officially supported
     py{36,37,38,39}-django{22,30,31}
-    py37-{flake8,bandit,readme,docs}
+    py37-{flake8,bandit,readme,docs,isort}
 
 [testenv]
 description = Unit tests
@@ -41,6 +41,12 @@ description = Static code analysis and code style
 deps = flake8
 commands = flake8
 
+[testenv:py37-isort]
+description = Ensure imports are ordered
+skip_install = True
+deps = isort
+commands = isort tests setup.py analytical --check --diff
+
 [testenv:py37-readme]
 description = Ensure README renders on PyPI
 deps = twine