diff --git a/polymorphic/tests.py b/polymorphic/tests.py
index ee165ed..379e955 100644
--- a/polymorphic/tests.py
+++ b/polymorphic/tests.py
@@ -682,11 +682,20 @@ class PolymorphicTests(TestCase):
         self.assertEqual(show_base_manager(PlainC), "<class 'django.db.models.manager.Manager'> <class 'polymorphic.tests.PlainC'>")
 
         self.assertEqual(show_base_manager(Model2A), "<class 'polymorphic.managers.PolymorphicManager'> <class 'polymorphic.tests.Model2A'>")
-        self.assertEqual(show_base_manager(Model2B), "<class 'django.db.models.manager.Manager'> <class 'polymorphic.tests.Model2B'>")
-        self.assertEqual(show_base_manager(Model2C), "<class 'django.db.models.manager.Manager'> <class 'polymorphic.tests.Model2C'>")
+        if django.VERSION >= (1, 10):
+            # The new inheritance makes all model levels polymorphic
+            self.assertEqual(show_base_manager(Model2B), "<class 'polymorphic.managers.PolymorphicManager'> <class 'polymorphic.tests.Model2B'>")
+            self.assertEqual(show_base_manager(Model2C), "<class 'polymorphic.managers.PolymorphicManager'> <class 'polymorphic.tests.Model2C'>")
+        else:
+            self.assertEqual(show_base_manager(Model2B), "<class 'django.db.models.manager.Manager'> <class 'polymorphic.tests.Model2B'>")
+            self.assertEqual(show_base_manager(Model2C), "<class 'django.db.models.manager.Manager'> <class 'polymorphic.tests.Model2C'>")
 
         self.assertEqual(show_base_manager(One2OneRelatingModel), "<class 'polymorphic.managers.PolymorphicManager'> <class 'polymorphic.tests.One2OneRelatingModel'>")
-        self.assertEqual(show_base_manager(One2OneRelatingModelDerived), "<class 'django.db.models.manager.Manager'> <class 'polymorphic.tests.One2OneRelatingModelDerived'>")
+        if django.VERSION >= (1, 10):
+            # The new inheritance makes all model levels polymorphic
+            self.assertEqual(show_base_manager(One2OneRelatingModelDerived), "<class 'polymorphic.managers.PolymorphicManager'> <class 'polymorphic.tests.One2OneRelatingModelDerived'>")
+        else:
+            self.assertEqual(show_base_manager(One2OneRelatingModelDerived), "<class 'django.db.models.manager.Manager'> <class 'polymorphic.tests.One2OneRelatingModelDerived'>")
 
     def test_instance_default_manager(self):
         def show_default_manager(instance):