diff --git a/src/postorius/tests/test_address_activation.py b/src/postorius/tests/test_address_activation.py
index adcd29c..71877ca 100644
--- a/src/postorius/tests/test_address_activation.py
+++ b/src/postorius/tests/test_address_activation.py
@@ -9,7 +9,7 @@
 from django.core import mail
 from django.test.client import Client, RequestFactory
 from django.test.utils import override_settings
-from django.utils import unittest
+from django.test import TestCase
 from mock import patch, call
 
 from postorius.forms import AddressActivationForm
@@ -18,7 +18,7 @@
 from postorius.views.user import AddressActivationView, address_activation_link
 
 
-class TestAddressActivationForm(unittest.TestCase):
+class TestAddressActivationForm(TestCase):
     """
     Test the activation form.
     """
@@ -48,7 +48,7 @@
         self.assertFalse(form.is_valid())
 
 
-class TestAddressActivationView(unittest.TestCase):
+class TestAddressActivationView(TestCase):
     """
     Tests to make sure the view is properly connected, renders the form
     correctly and starts the actual address activation process if a valid
@@ -104,7 +104,7 @@
                         in [t.name for t in response.templates])
 
 
-class TestAddressConfirmationProfile(unittest.TestCase):
+class TestAddressConfirmationProfile(TestCase):
     """
     Test the confirmation of an email address activation (validating token,
     expiration, Mailman API calls etc.).
@@ -186,7 +186,7 @@
         self.assertIn("another-virtualhost", mail.outbox[0].body)
 
 
-class TestAddressActivationLinkSuccess(unittest.TestCase):
+class TestAddressActivationLinkSuccess(TestCase):
     """
     This tests the activation link view if the key is valid and the profile is
     not expired.
diff --git a/src/postorius/tests/test_auth_decorators.py b/src/postorius/tests/test_auth_decorators.py
index 593e66b..6c8e9ce 100644
--- a/src/postorius/tests/test_auth_decorators.py
+++ b/src/postorius/tests/test_auth_decorators.py
@@ -18,7 +18,7 @@
 from django.contrib.auth.models import AnonymousUser, User
 from django.core.exceptions import PermissionDenied
 from django.test.client import RequestFactory
-from django.utils import unittest
+from django.test import TestCase
 from mock import patch
 
 from postorius.auth.decorators import (list_owner_required,
@@ -39,7 +39,7 @@
     return True
 
 
-class ListOwnerRequiredTest(unittest.TestCase):
+class ListOwnerRequiredTest(TestCase):
     """Tests the list_owner_required auth decorator."""
 
     def setUp(self):
@@ -105,7 +105,7 @@
         self.assertEqual(return_value, True)
 
 
-class ListModeratorRequiredTest(unittest.TestCase):
+class ListModeratorRequiredTest(TestCase):
     """Tests the list_owner_required auth decorator."""
 
     def setUp(self):
diff --git a/src/postorius/tests/test_forms.py b/src/postorius/tests/test_forms.py
index 58717bd..f5cb781 100644
--- a/src/postorius/tests/test_forms.py
+++ b/src/postorius/tests/test_forms.py
@@ -14,13 +14,13 @@
 #
 # You should have received a copy of the GNU General Public License along with
 # Postorius.  If not, see <http://www.gnu.org/licenses/>.
-from django.utils import unittest
+from django.test import TestCase
 
 from postorius.forms import (ListNew,
     UserPreferences, DomainNew, ListSubscribe, ChangeSubscriptionForm)
 
 
-class UserPreferencesTest(unittest.TestCase):
+class UserPreferencesTest(TestCase):
 
     def test_form_fields_valid(self):
         form = UserPreferences({
@@ -31,7 +31,7 @@
         })
         self.assertTrue(form.is_valid())
 
-class DomainNewTest(unittest.TestCase):
+class DomainNewTest(TestCase):
 
     def test_form_fields_webhost(self):
         form = DomainNew({
@@ -52,7 +52,7 @@
         self.assertFalse(form.is_valid())
 
 
-class ListSubscribeTest(unittest.TestCase):
+class ListSubscribeTest(TestCase):
     def test_subscribe_works(self):
         user_emails = ['someone@example.com']
         form = ListSubscribe(user_emails, {
@@ -78,7 +78,7 @@
         })
         self.assertFalse(form.is_valid())
 
-class ChangeSubscriptionTest(unittest.TestCase):
+class ChangeSubscriptionTest(TestCase):
     def test_subscription_changes_only_to_user_addresses(self):
         user_emails = ['one@example.com', 'two@example.com']
         form = ChangeSubscriptionForm(user_emails,
@@ -92,7 +92,7 @@
         self.assertTrue(form.is_valid())
 
 
-class ListNewTest(unittest.TestCase):
+class ListNewTest(TestCase):
 
     def test_form_fields_list(self):
         form = ListNew({