diff --git a/weblate/accounts/models.py b/weblate/accounts/models.py
index 1872dfdff742..e6e8a1fd501c 100644
--- a/weblate/accounts/models.py
+++ b/weblate/accounts/models.py
@@ -34,7 +34,6 @@
 from django.utils.translation import LANGUAGE_SESSION_KEY, ugettext
 from django.utils.translation import ugettext_lazy as _
 from rest_framework.authtoken.models import Token
-from six import python_2_unicode_compatible
 from social_django.models import UserSocialAuth
 
 from weblate.accounts.avatar import get_user_display
@@ -50,7 +49,6 @@
 from weblate.utils.request import get_ip_address, get_user_agent
 
 
-@python_2_unicode_compatible
 class Subscription(models.Model):
     user = models.ForeignKey(User, on_delete=models.deletion.CASCADE)
     notification = models.CharField(
@@ -178,7 +176,6 @@ def order(self):
         return self.order_by('-timestamp')
 
 
-@python_2_unicode_compatible
 class AuditLog(models.Model):
     """User audit log storage."""
 
@@ -253,7 +250,6 @@ def save(self, *args, **kwargs):
             transaction.on_commit(lambda: notify_auditlog.delay(self.pk, email))
 
 
-@python_2_unicode_compatible
 class VerifiedEmail(models.Model):
     """Storage for verified e-mails from auth backends."""
 
@@ -268,7 +264,6 @@ def provider(self):
         return self.social.provider
 
 
-@python_2_unicode_compatible
 class Profile(models.Model):
     """User profiles storage."""
 
diff --git a/weblate/addons/models.py b/weblate/addons/models.py
index 53ffcd594fff..b94d225d8f2b 100644
--- a/weblate/addons/models.py
+++ b/weblate/addons/models.py
@@ -28,7 +28,6 @@
 from django.dispatch import receiver
 from django.urls import reverse
 from django.utils.functional import cached_property
-from six import python_2_unicode_compatible
 
 from weblate.addons.events import (
     EVENT_CHOICES,
@@ -83,7 +82,6 @@ def filter_event(self, component, event):
         return component.addons_cache[event]
 
 
-@python_2_unicode_compatible
 class Addon(models.Model):
     component = models.ForeignKey(Component, on_delete=models.deletion.CASCADE)
     name = models.CharField(max_length=100)
@@ -123,7 +121,6 @@ def delete(self, *args, **kwargs):
         super(Addon, self).delete(*args, **kwargs)
 
 
-@python_2_unicode_compatible
 class Event(models.Model):
     addon = models.ForeignKey(Addon, on_delete=models.deletion.CASCADE)
     event = models.IntegerField(choices=EVENT_CHOICES)
diff --git a/weblate/auth/models.py b/weblate/auth/models.py
index 72354f0784fe..46101bb5f748 100644
--- a/weblate/auth/models.py
+++ b/weblate/auth/models.py
@@ -34,7 +34,6 @@
 from django.utils.functional import cached_property
 from django.utils.translation import pgettext, ugettext
 from django.utils.translation import ugettext_lazy as _
-from six import python_2_unicode_compatible
 
 from weblate.auth.data import (
     ACL_GROUPS,
@@ -64,7 +63,6 @@
 )
 
 
-@python_2_unicode_compatible
 class Permission(models.Model):
     codename = models.CharField(max_length=100, unique=True)
     name = models.CharField(max_length=200)
@@ -77,7 +75,6 @@ def __str__(self):
         return ugettext(self.name)
 
 
-@python_2_unicode_compatible
 class Role(models.Model):
     name = models.CharField(verbose_name=_('Name'), max_length=200)
     permissions = models.ManyToManyField(
@@ -99,7 +96,6 @@ def for_project(self, project):
         ).order_by('name')
 
 
-@python_2_unicode_compatible
 class Group(models.Model):
     SELECTION_MANUAL = 0
     SELECTION_ALL = 1
@@ -276,7 +272,6 @@ def contribute_to_class(self, cls, name, **kwargs):
             related_manager_cls.remove = wrap_group(related_manager_cls.remove)
 
 
-@python_2_unicode_compatible
 class User(AbstractBaseUser):
     username = models.CharField(
         _('username'),
@@ -488,7 +483,6 @@ def get_author_name(self, email=True):
         return "{0} <{1}>".format(full_name, self.email)
 
 
-@python_2_unicode_compatible
 class AutoGroup(models.Model):
     match = RegexField(
         verbose_name=_('E-mail regular expression'),
diff --git a/weblate/billing/models.py b/weblate/billing/models.py
index a407395284d0..7d7d343a34b7 100644
--- a/weblate/billing/models.py
+++ b/weblate/billing/models.py
@@ -32,7 +32,6 @@
 from django.utils import timezone
 from django.utils.functional import cached_property
 from django.utils.translation import ugettext_lazy as _
-from six import python_2_unicode_compatible
 
 from weblate.auth.models import User
 from weblate.lang.models import Language
@@ -53,7 +52,6 @@ def public(self, user=None):
         return result.distinct().order_by('price')
 
 
-@python_2_unicode_compatible
 class Plan(models.Model):
     name = models.CharField(max_length=100, unique=True)
     price = models.IntegerField(default=0)
@@ -119,7 +117,6 @@ def for_user(self, user):
         )
 
 
-@python_2_unicode_compatible
 class Billing(models.Model):
     STATE_ACTIVE = 0
     STATE_TRIAL = 1
@@ -380,7 +377,6 @@ def order(self):
         return self.order_by('-start')
 
 
-@python_2_unicode_compatible
 class Invoice(models.Model):
     CURRENCY_EUR = 0
     CURRENCY_BTC = 1
diff --git a/weblate/checks/models.py b/weblate/checks/models.py
index 159dd0dfb6f0..58d8baf083b8 100644
--- a/weblate/checks/models.py
+++ b/weblate/checks/models.py
@@ -26,7 +26,6 @@
 from django.db.models.signals import post_save
 from django.dispatch import receiver
 from django.utils.functional import cached_property
-from six import python_2_unicode_compatible
 
 from weblate.checks import CHECKS
 from weblate.utils.decorators import disable_for_loaddata
@@ -111,7 +110,6 @@ def bulk_create_ignore(self, objs):
                     continue
 
 
-@python_2_unicode_compatible
 class Check(models.Model):
     unit = models.ForeignKey("trans.Unit", on_delete=models.deletion.CASCADE)
     check = models.CharField(max_length=50, choices=CHECKS.get_choices())
diff --git a/weblate/fonts/models.py b/weblate/fonts/models.py
index e4e43bdefa5e..8be5d2f761bd 100644
--- a/weblate/fonts/models.py
+++ b/weblate/fonts/models.py
@@ -25,7 +25,6 @@
 from django.db import models
 from django.urls import reverse
 from django.utils.translation import ugettext_lazy as _
-from six import python_2_unicode_compatible
 
 from weblate.fonts.utils import get_font_name
 from weblate.fonts.validators import validate_font
@@ -37,7 +36,6 @@
 FONT_STORAGE = FileSystemStorage(location=data_dir("fonts"))
 
 
-@python_2_unicode_compatible
 class Font(models.Model, UserDisplayMixin):
     family = models.CharField(verbose_name=_("Font family"), max_length=100, blank=True)
     style = models.CharField(verbose_name=_("Font style"), max_length=100, blank=True)
@@ -100,7 +98,6 @@ def order(self):
         return self.order_by("name")
 
 
-@python_2_unicode_compatible
 class FontGroup(models.Model):
     name = models.SlugField(
         verbose_name=_("Font group name"),
@@ -132,7 +129,6 @@ def get_absolute_url(self):
         )
 
 
-@python_2_unicode_compatible
 class FontOverride(models.Model):
     group = models.ForeignKey(FontGroup, on_delete=models.deletion.CASCADE)
     font = models.ForeignKey(
diff --git a/weblate/lang/models.py b/weblate/lang/models.py
index 91123e17cb7f..57ab469f0b27 100644
--- a/weblate/lang/models.py
+++ b/weblate/lang/models.py
@@ -36,7 +36,6 @@
 from django.utils.translation import pgettext_lazy
 from django.utils.translation import ugettext as _
 from django.utils.translation import ugettext_lazy
-from six import python_2_unicode_compatible
 
 from weblate.lang import data
 from weblate.langdata.aliases import ALIASES
@@ -377,7 +376,6 @@ def setup_lang(sender, **kwargs):
         Language.objects.setup(False)
 
 
-@python_2_unicode_compatible
 class Language(models.Model):
     code = models.SlugField(unique=True, verbose_name=ugettext_lazy('Language code'))
     name = models.CharField(max_length=100, verbose_name=ugettext_lazy('Language name'))
@@ -447,7 +445,6 @@ def order(self):
         return self.order_by('source')
 
 
-@python_2_unicode_compatible
 class Plural(models.Model):
     PLURAL_CHOICES = (
         (data.PLURAL_NONE, pgettext_lazy('Plural type', 'None')),
diff --git a/weblate/legal/models.py b/weblate/legal/models.py
index 27ff1c800134..9fa798db80b5 100644
--- a/weblate/legal/models.py
+++ b/weblate/legal/models.py
@@ -23,7 +23,6 @@
 
 from django.conf import settings
 from django.db import models
-from six import python_2_unicode_compatible
 
 from weblate.accounts.models import AuditLog
 from weblate.utils.request import get_ip_address, get_user_agent
@@ -32,7 +31,6 @@
 TOS_DATE = date(2017, 7, 2)
 
 
-@python_2_unicode_compatible
 class Agreement(models.Model):
     user = models.OneToOneField(
         settings.AUTH_USER_MODEL, unique=True, on_delete=models.deletion.CASCADE
diff --git a/weblate/screenshots/models.py b/weblate/screenshots/models.py
index 763c4bb19a9c..8901bac904e4 100644
--- a/weblate/screenshots/models.py
+++ b/weblate/screenshots/models.py
@@ -23,7 +23,6 @@
 from django.db import models
 from django.urls import reverse
 from django.utils.translation import ugettext_lazy as _
-from six import python_2_unicode_compatible
 
 from weblate.screenshots.fields import ScreenshotField
 from weblate.trans.mixins import UserDisplayMixin
@@ -35,7 +34,6 @@ def order(self):
         return self.order_by('name')
 
 
-@python_2_unicode_compatible
 class Screenshot(models.Model, UserDisplayMixin):
     name = models.CharField(verbose_name=_('Screenshot name'), max_length=200)
     image = ScreenshotField(
diff --git a/weblate/trans/models/agreement.py b/weblate/trans/models/agreement.py
index 9ae1059f536e..9e16560d7c28 100644
--- a/weblate/trans/models/agreement.py
+++ b/weblate/trans/models/agreement.py
@@ -21,7 +21,6 @@
 
 from django.conf import settings
 from django.db import models
-from six import python_2_unicode_compatible
 
 
 class ContributorAgreementManager(models.Manager):
@@ -43,7 +42,6 @@ def order(self):
         return self.order_by('component__project__name', 'component__name')
 
 
-@python_2_unicode_compatible
 class ContributorAgreement(models.Model):
     user = models.ForeignKey(
         settings.AUTH_USER_MODEL, on_delete=models.deletion.CASCADE
diff --git a/weblate/trans/models/alert.py b/weblate/trans/models/alert.py
index fb4618ba2725..5e05c50b26c8 100644
--- a/weblate/trans/models/alert.py
+++ b/weblate/trans/models/alert.py
@@ -25,7 +25,6 @@
 from django.utils.encoding import force_text
 from django.utils.functional import cached_property
 from django.utils.translation import ugettext_lazy as _
-from six import python_2_unicode_compatible
 
 from weblate.langdata.countries import DEFAULT_LANGS
 from weblate.utils.fields import JSONField
@@ -42,7 +41,6 @@ def register(cls):
     return cls
 
 
-@python_2_unicode_compatible
 class Alert(models.Model):
     component = models.ForeignKey('Component', on_delete=models.deletion.CASCADE)
     timestamp = models.DateTimeField(auto_now_add=True)
diff --git a/weblate/trans/models/change.py b/weblate/trans/models/change.py
index 5d50fa923446..00bf7d0b0c6a 100644
--- a/weblate/trans/models/change.py
+++ b/weblate/trans/models/change.py
@@ -25,7 +25,6 @@
 from django.utils import timezone
 from django.utils.translation import ugettext as _
 from django.utils.translation import ugettext_lazy
-from six import python_2_unicode_compatible
 
 from weblate.lang.models import Language
 from weblate.trans.mixins import UserDisplayMixin
@@ -155,7 +154,6 @@ def create(self, user=None, **kwargs):
         return super(ChangeManager, self).create(user=user, **kwargs)
 
 
-@python_2_unicode_compatible
 class Change(models.Model, UserDisplayMixin):
     ACTION_UPDATE = 0
     ACTION_COMPLETE = 1
diff --git a/weblate/trans/models/comment.py b/weblate/trans/models/comment.py
index 7a5c4656a624..a34477b8d015 100644
--- a/weblate/trans/models/comment.py
+++ b/weblate/trans/models/comment.py
@@ -21,7 +21,6 @@
 
 from django.conf import settings
 from django.db import models
-from six import python_2_unicode_compatible
 
 from weblate.trans.mixins import UserDisplayMixin
 from weblate.trans.models.change import Change
@@ -48,7 +47,6 @@ def order(self):
         return self.order_by('timestamp')
 
 
-@python_2_unicode_compatible
 class Comment(models.Model, UserDisplayMixin):
     unit = models.ForeignKey("trans.Unit", on_delete=models.deletion.CASCADE)
     comment = models.TextField()
diff --git a/weblate/trans/models/component.py b/weblate/trans/models/component.py
index 55ce1c457107..5d37721bae3c 100644
--- a/weblate/trans/models/component.py
+++ b/weblate/trans/models/component.py
@@ -40,7 +40,6 @@
 from django.utils.functional import cached_property
 from django.utils.translation import ugettext as _
 from django.utils.translation import ugettext_lazy, ungettext
-from six import python_2_unicode_compatible
 from six.moves.urllib.parse import urlparse
 
 from weblate.checks.flags import Flags
@@ -161,7 +160,6 @@ def with_repo(self):
         return self.exclude(repo__startswith="weblate:")
 
 
-@python_2_unicode_compatible
 class Component(models.Model, URLMixin, PathMixin):
     name = models.CharField(
         verbose_name=ugettext_lazy("Component name"),
diff --git a/weblate/trans/models/componentlist.py b/weblate/trans/models/componentlist.py
index 50f98087e946..0400ec879acb 100644
--- a/weblate/trans/models/componentlist.py
+++ b/weblate/trans/models/componentlist.py
@@ -25,7 +25,6 @@
 from django.db import models
 from django.urls import reverse
 from django.utils.translation import ugettext_lazy as _
-from six import python_2_unicode_compatible
 
 from weblate.trans.fields import RegexField
 from weblate.utils.stats import ComponentListStats
@@ -36,7 +35,6 @@ def order(self):
         return self.order_by('name')
 
 
-@python_2_unicode_compatible
 class ComponentList(models.Model):
 
     name = models.CharField(
@@ -85,7 +83,6 @@ def get_absolute_url(self):
         return reverse('component-list', kwargs={'name': self.slug})
 
 
-@python_2_unicode_compatible
 class AutoComponentList(models.Model):
     project_match = RegexField(
         verbose_name=_('Project regular expression'),
diff --git a/weblate/trans/models/dictionary.py b/weblate/trans/models/dictionary.py
index 42f19e4bdfba..02eb7f231506 100644
--- a/weblate/trans/models/dictionary.py
+++ b/weblate/trans/models/dictionary.py
@@ -25,7 +25,6 @@
 from django.db import models
 from django.db.models.functions import Lower
 from django.urls import reverse
-from six import python_2_unicode_compatible
 from whoosh.analysis import LanguageAnalyzer, NgramAnalyzer, SimpleAnalyzer
 from whoosh.analysis.filters import StopFilter
 from whoosh.lang import NoStopWords
@@ -171,7 +170,6 @@ def order(self):
         return self.order_by(Lower('source'))
 
 
-@python_2_unicode_compatible
 class Dictionary(models.Model):
     project = models.ForeignKey(Project, on_delete=models.deletion.CASCADE)
     language = models.ForeignKey(Language, on_delete=models.deletion.CASCADE)
diff --git a/weblate/trans/models/label.py b/weblate/trans/models/label.py
index a5da9ed4b56a..8399d24fe68b 100644
--- a/weblate/trans/models/label.py
+++ b/weblate/trans/models/label.py
@@ -23,10 +23,8 @@
 from django.utils.html import escape
 from django.utils.safestring import mark_safe
 from django.utils.translation import ugettext_lazy
-from six import python_2_unicode_compatible
 
 
-@python_2_unicode_compatible
 class Label(models.Model):
     project = models.ForeignKey("Project", on_delete=models.deletion.CASCADE)
     name = models.CharField(verbose_name=ugettext_lazy("Label name"), max_length=190)
diff --git a/weblate/trans/models/project.py b/weblate/trans/models/project.py
index 855493260ea5..ddac79089b12 100644
--- a/weblate/trans/models/project.py
+++ b/weblate/trans/models/project.py
@@ -30,7 +30,6 @@
 from django.utils.functional import cached_property
 from django.utils.translation import ugettext as _
 from django.utils.translation import ugettext_lazy
-from six import python_2_unicode_compatible
 
 from weblate.checks import CHECKS
 from weblate.checks.models import Check
@@ -47,7 +46,6 @@ def order(self):
         return self.order_by('name')
 
 
-@python_2_unicode_compatible
 class Project(models.Model, URLMixin, PathMixin):
     ACCESS_PUBLIC = 0
     ACCESS_PROTECTED = 1
diff --git a/weblate/trans/models/shaping.py b/weblate/trans/models/shaping.py
index d2db887d9a86..3354d0bc34f0 100644
--- a/weblate/trans/models/shaping.py
+++ b/weblate/trans/models/shaping.py
@@ -20,12 +20,10 @@
 
 
 from django.db import models
-from six import python_2_unicode_compatible
 
 from weblate.trans.fields import RegexField
 
 
-@python_2_unicode_compatible
 class Shaping(models.Model):
     component = models.ForeignKey("Component", on_delete=models.deletion.CASCADE)
     shaping_regex = RegexField(max_length=190)
diff --git a/weblate/trans/models/suggestion.py b/weblate/trans/models/suggestion.py
index 80aa45b20f84..83ed8d0c4778 100644
--- a/weblate/trans/models/suggestion.py
+++ b/weblate/trans/models/suggestion.py
@@ -23,7 +23,6 @@
 from django.db import models, transaction
 from django.db.models import Sum
 from django.utils.translation import ugettext as _
-from six import python_2_unicode_compatible
 
 from weblate.trans.mixins import UserDisplayMixin
 from weblate.trans.models.change import Change
@@ -93,7 +92,6 @@ def order(self):
         return self.order_by('-timestamp')
 
 
-@python_2_unicode_compatible
 class Suggestion(models.Model, UserDisplayMixin):
     unit = models.ForeignKey("trans.Unit", on_delete=models.deletion.CASCADE)
     target = models.TextField()
@@ -168,7 +166,6 @@ def add_vote(self, translation, request, value):
             self.accept(translation, request, 'suggestion.vote')
 
 
-@python_2_unicode_compatible
 class Vote(models.Model):
     """Suggestion voting."""
 
diff --git a/weblate/trans/models/translation.py b/weblate/trans/models/translation.py
index 1a7ec4766426..615e22bcee20 100644
--- a/weblate/trans/models/translation.py
+++ b/weblate/trans/models/translation.py
@@ -30,7 +30,6 @@
 from django.utils import timezone
 from django.utils.functional import cached_property
 from django.utils.translation import ugettext as _
-from six import python_2_unicode_compatible
 
 from weblate.checks import CHECKS
 from weblate.checks.flags import Flags
@@ -99,7 +98,6 @@ def prefetch(self):
         ).prefetch_related('language__plural_set', 'component__alert_set')
 
 
-@python_2_unicode_compatible
 class Translation(models.Model, URLMixin, LoggerMixin):
     component = models.ForeignKey('Component', on_delete=models.deletion.CASCADE)
     language = models.ForeignKey(Language, on_delete=models.deletion.CASCADE)
diff --git a/weblate/trans/models/unit.py b/weblate/trans/models/unit.py
index fac5253cad74..f08962ed977f 100644
--- a/weblate/trans/models/unit.py
+++ b/weblate/trans/models/unit.py
@@ -30,7 +30,6 @@
 from django.utils import timezone
 from django.utils.functional import cached_property
 from django.utils.translation import ugettext_lazy
-from six import python_2_unicode_compatible
 
 from weblate.checks import CHECKS
 from weblate.checks.flags import Flags
@@ -161,7 +160,6 @@ def order(self):
         return self.order_by('-priority', 'position')
 
 
-@python_2_unicode_compatible
 class Unit(models.Model, LoggerMixin):
 
     translation = models.ForeignKey('Translation', on_delete=models.deletion.CASCADE)
diff --git a/weblate/trans/models/whiteboard.py b/weblate/trans/models/whiteboard.py
index be249546159d..6ee2ad10001f 100644
--- a/weblate/trans/models/whiteboard.py
+++ b/weblate/trans/models/whiteboard.py
@@ -28,7 +28,6 @@
 from django.utils.safestring import mark_safe
 from django.utils.translation import ugettext as _
 from django.utils.translation import ugettext_lazy
-from six import python_2_unicode_compatible
 
 from weblate.lang.models import Language
 
@@ -62,7 +61,6 @@ def context_filter(self, project=None, component=None, language=None):
         return base.filter(project=None, component=None, language=None)
 
 
-@python_2_unicode_compatible
 class WhiteboardMessage(models.Model):
     message = models.TextField(verbose_name=ugettext_lazy('Message'))
     message_html = models.BooleanField(  # noqa: DJ02
diff --git a/weblate/wladmin/models.py b/weblate/wladmin/models.py
index a3957e9e7e8e..2f7d789302e4 100644
--- a/weblate/wladmin/models.py
+++ b/weblate/wladmin/models.py
@@ -26,7 +26,6 @@
 from django.db import models
 from django.utils import timezone
 from django.utils.translation import ugettext_lazy
-from six import python_2_unicode_compatible
 
 from weblate import USER_AGENT
 from weblate.auth.models import User
@@ -70,7 +69,6 @@ def remove(self, name):
         self.filter(name=name).delete()
 
 
-@python_2_unicode_compatible
 class ConfigurationError(models.Model):
     name = models.CharField(unique=True, max_length=150)
     message = models.TextField()
@@ -102,7 +100,6 @@ def get_current(self):
             return SupportStatus(name='community')
 
 
-@python_2_unicode_compatible
 class SupportStatus(models.Model):
     name = models.CharField(max_length=150)
     secret = models.CharField(max_length=400)
@@ -150,7 +147,6 @@ def refresh(self):
             )
 
 
-@python_2_unicode_compatible
 class BackupService(models.Model):
     repository = models.CharField(
         max_length=500, default='', verbose_name=ugettext_lazy('Backup repository')
@@ -188,7 +184,6 @@ def prune(self):
             self.backuplog_set.create(event='error', log=str(error))
 
 
-@python_2_unicode_compatible
 class BackupLog(models.Model):
     service = models.ForeignKey(BackupService, on_delete=models.deletion.CASCADE)
     timestamp = models.DateTimeField(default=timezone.now)