diff --git a/heatherr/checkin/tasks.py b/heatherr/checkin/tasks.py
index c87ba1c..50bea8c 100644
--- a/heatherr/checkin/tasks.py
+++ b/heatherr/checkin/tasks.py
@@ -1,6 +1,5 @@
 from heatherr import celery_app
 from heatherr.models import SlackAccount
-from heatherr.checkin.models import Checkin
 
 
 @celery_app.task(ignore_result=True)
@@ -9,6 +8,7 @@ def check_all_checkins():
     for slackaccount in slackaccounts:
         check_slackaccount_checkins(slackaccount)
 
+
 def check_slackaccount_checkins(slackaccount):
     users = slackaccount.get_users()
     requireds = [checkin
@@ -17,6 +17,7 @@ def check_slackaccount_checkins(slackaccount):
     for checkin in requireds:
         check_checkin(checkin)
 
+
 def check_checkin(checkin):
     # At this point we need to get more oAuth scopes because incoming
     # webhook URLs cannot do private messages.
diff --git a/heatherr/checkin/tests/test_commands.py b/heatherr/checkin/tests/test_commands.py
index ad8e8a6..c0be8fc 100644
--- a/heatherr/checkin/tests/test_commands.py
+++ b/heatherr/checkin/tests/test_commands.py
@@ -1,5 +1,3 @@
-import responses
-
 from heatherr.tests import CommandTestCase
 from heatherr.checkin.models import Checkin
 
diff --git a/heatherr/checkin/tests/test_models.py b/heatherr/checkin/tests/test_models.py
index 8dc0e18..b07b681 100644
--- a/heatherr/checkin/tests/test_models.py
+++ b/heatherr/checkin/tests/test_models.py
@@ -4,7 +4,6 @@
 
 from django.utils import timezone
 
-import arrow
 import responses
 
 from freezegun import freeze_time
diff --git a/heatherr/tests/base.py b/heatherr/tests/base.py
index 60409a5..4274676 100644
--- a/heatherr/tests/base.py
+++ b/heatherr/tests/base.py
@@ -31,6 +31,7 @@ def mock_api_call(self, method, data):
             responses.POST, 'https://slack.com/api/%s' % (method,),
             json=data)
 
+
 class CommandTestCase(HeatherrTestCase):
 
     default_user_id = 'user_id'
diff --git a/setup.cfg b/setup.cfg
index d6c3c41..51389bd 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [flake8]
-ignore = F403
+ignore = F403,E402
 exclude = ve,**/migrations/*,local_settings.py
 
 [pytest]