diff --git a/src/postorius/tests/mailman_api_tests/test_domain_index.py b/src/postorius/tests/mailman_api_tests/test_domain_index.py
index bf545a7..7f1d9f2 100644
--- a/src/postorius/tests/mailman_api_tests/test_domain_index.py
+++ b/src/postorius/tests/mailman_api_tests/test_domain_index.py
@@ -18,7 +18,7 @@
 import logging
 
 from django.core.urlresolvers import reverse
-from django.test import Client, SimpleTestCase
+from django.test import Client, TestCase
 from django.contrib.auth.models import User
 try:
     from urllib2 import HTTPError
@@ -34,7 +34,7 @@
 vcr_log.setLevel(logging.WARNING)
 
 
-class DomainIndexPageTest(SimpleTestCase):
+class DomainIndexPageTest(TestCase):
     """Tests for the list index page."""
 
     @MM_VCR.use_cassette('test_domain_index.yaml')
diff --git a/src/postorius/tests/mailman_api_tests/test_domain_new.py b/src/postorius/tests/mailman_api_tests/test_domain_new.py
index ebf541a..b8fb6a9 100644
--- a/src/postorius/tests/mailman_api_tests/test_domain_new.py
+++ b/src/postorius/tests/mailman_api_tests/test_domain_new.py
@@ -21,7 +21,7 @@
 from django.contrib.auth.models import User
 from django.core.urlresolvers import reverse
 from django.shortcuts import resolve_url
-from django.test import Client, SimpleTestCase
+from django.test import Client, TestCase
 
 try:
     from urllib2 import HTTPError
@@ -37,7 +37,7 @@
 vcr_log.setLevel(logging.WARNING)
 
 
-class DomainCreationTest(SimpleTestCase):
+class DomainCreationTest(TestCase):
     """Tests for the new list page."""
 
     @MM_VCR.use_cassette('test_domain_creation.yaml')
diff --git a/src/postorius/tests/mailman_api_tests/test_list_index.py b/src/postorius/tests/mailman_api_tests/test_list_index.py
index ba1551c..30c7706 100644
--- a/src/postorius/tests/mailman_api_tests/test_list_index.py
+++ b/src/postorius/tests/mailman_api_tests/test_list_index.py
@@ -18,7 +18,7 @@
 import logging
 
 from django.core.urlresolvers import reverse
-from django.test import Client, SimpleTestCase
+from django.test import Client, TestCase
 try:
     from urllib2 import HTTPError
 except ImportError:
@@ -33,7 +33,7 @@
 vcr_log.setLevel(logging.WARNING)
 
 
-class ListIndexPageTest(SimpleTestCase):
+class ListIndexPageTest(TestCase):
     """Tests for the list index page."""
 
     @MM_VCR.use_cassette('test_list_index.yaml')
diff --git a/src/postorius/tests/mailman_api_tests/test_list_new.py b/src/postorius/tests/mailman_api_tests/test_list_new.py
index e835775..95b9943 100644
--- a/src/postorius/tests/mailman_api_tests/test_list_new.py
+++ b/src/postorius/tests/mailman_api_tests/test_list_new.py
@@ -21,7 +21,7 @@
 from django.contrib.auth.models import User
 from django.core.urlresolvers import reverse
 from django.shortcuts import resolve_url
-from django.test import Client, SimpleTestCase
+from django.test import Client, TestCase
 
 try:
     from urllib2 import HTTPError
@@ -37,7 +37,7 @@
 vcr_log.setLevel(logging.WARNING)
 
 
-class ListCreationTest(SimpleTestCase):
+class ListCreationTest(TestCase):
     """Tests for the new list page."""
 
     @MM_VCR.use_cassette('test_list_creation.yaml')
diff --git a/src/postorius/tests/mailman_api_tests/test_list_summary.py b/src/postorius/tests/mailman_api_tests/test_list_summary.py
index 163686c..3e799f1 100644
--- a/src/postorius/tests/mailman_api_tests/test_list_summary.py
+++ b/src/postorius/tests/mailman_api_tests/test_list_summary.py
@@ -19,7 +19,7 @@
 from django.contrib.auth.models import User
 from django.core.urlresolvers import reverse
 from django.db import IntegrityError
-from django.test import Client, SimpleTestCase
+from django.test import Client, TestCase
 try:
     from urllib2 import HTTPError
 except ImportError:
@@ -34,7 +34,7 @@
 vcr_log.setLevel(logging.WARNING)
 
 
-class ListSummaryPageTest(SimpleTestCase):
+class ListSummaryPageTest(TestCase):
     """Tests for the list summary page.
 
     Tests accessiblity and existince of the submit form depending on
diff --git a/src/postorius/tests/mailman_api_tests/test_models.py b/src/postorius/tests/mailman_api_tests/test_models.py
index 33947f6..b121204 100644
--- a/src/postorius/tests/mailman_api_tests/test_models.py
+++ b/src/postorius/tests/mailman_api_tests/test_models.py
@@ -19,7 +19,7 @@
 from django.contrib.auth.models import User
 from django.core.urlresolvers import reverse
 from django.db import IntegrityError
-from django.test import Client, SimpleTestCase
+from django.test import Client, TestCase
 try:
     from urllib2 import HTTPError
 except ImportError:
@@ -34,7 +34,7 @@
 vcr_log.setLevel(logging.WARNING)
 
 
-class ModelTest(SimpleTestCase):
+class ModelTest(TestCase):
     """Tests for the list index page."""
 
     @MM_VCR.use_cassette('test_model.yaml')