diff --git a/src/pretix/base/forms/questions.py b/src/pretix/base/forms/questions.py
index 39c16ef0e..a11bb1f0e 100644
--- a/src/pretix/base/forms/questions.py
+++ b/src/pretix/base/forms/questions.py
@@ -57,7 +57,7 @@ from django.forms.widgets import FILE_INPUT_CONTRADICTION
 from django.utils.formats import date_format
 from django.utils.html import escape
 from django.utils.safestring import mark_safe
-from django.utils.timezone import get_current_timezone, now
+from django.utils.timezone import get_current_timezone
 from django.utils.translation import gettext_lazy as _, pgettext_lazy
 from django_countries import countries
 from django_countries.fields import Country, CountryField
diff --git a/src/pretix/base/models/items.py b/src/pretix/base/models/items.py
index 712f8946a..4f0f24d53 100644
--- a/src/pretix/base/models/items.py
+++ b/src/pretix/base/models/items.py
@@ -55,7 +55,7 @@ from django.db.models import Q
 from django.utils import formats
 from django.utils.crypto import get_random_string
 from django.utils.functional import cached_property
-from django.utils.timezone import is_naive, make_aware, now
+from django.utils.timezone import is_naive, make_aware
 from django.utils.translation import gettext_lazy as _, pgettext_lazy
 from django_countries.fields import Country
 from django_scopes import ScopedManager
diff --git a/src/tests/presale/test_cart.py b/src/tests/presale/test_cart.py
index a2ee58071..94839a810 100644
--- a/src/tests/presale/test_cart.py
+++ b/src/tests/presale/test_cart.py
@@ -49,7 +49,7 @@ from pretix.base.decimal import round_decimal
 from pretix.base.models import (
     CartPosition, Discount, Event, InvoiceAddress, Item, ItemCategory,
     ItemVariation, Organizer, Question, QuestionAnswer, Quota, SeatingPlan,
-    Team, User, Voucher,
+    Voucher,
 )
 from pretix.base.models.items import (
     ItemAddOn, ItemBundle, SubEventItem, SubEventItemVariation,
@@ -57,8 +57,10 @@ from pretix.base.models.items import (
 from pretix.base.services.cart import CartError, CartManager, error_messages
 from pretix.testutils.scope import classscope
 from pretix.testutils.sessions import get_cart_session_key
+
 from .test_timemachine import TimemachineTestMixin
 
+
 class CartTestMixin:
     @scopes_disabled()
     def setUp(self):
diff --git a/src/tests/presale/test_checkout.py b/src/tests/presale/test_checkout.py
index 752cf4d67..09cd935e9 100644
--- a/src/tests/presale/test_checkout.py
+++ b/src/tests/presale/test_checkout.py
@@ -56,6 +56,7 @@ from pretix.base.services.tax import VATIDFinalError, VATIDTemporaryError
 from pretix.base.timemachine import time_machine_now_assigned
 from pretix.testutils.scope import classscope
 from pretix.testutils.sessions import get_cart_session_key
+
 from .test_timemachine import TimemachineTestMixin
 
 
diff --git a/src/tests/presale/test_timemachine.py b/src/tests/presale/test_timemachine.py
index 066232fcf..48a230f53 100644
--- a/src/tests/presale/test_timemachine.py
+++ b/src/tests/presale/test_timemachine.py
@@ -21,7 +21,7 @@
 #
 from django_scopes.state import scopes_disabled
 
-from pretix.base.models import User, Team
+from pretix.base.models import Team, User
 
 
 class TimemachineTestMixin: