diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..71eb5d9
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,11 @@
+language: python
+python:
+  - "2.7"
+  - "3.4"
+env:
+  - DJANGO_VERSION=1.7
+  - DJANGO_VERSION=1.8
+install:
+  - "pip install -r requirements.txt"
+  - "pip install Django==$DJANGO_VERSION"
+script: "python src/manage.py test testapp"
diff --git a/requirements.txt b/requirements.txt
index be600a3..e38f742 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-Django>=1.5
+Django>=1.7
diff --git a/setup.py b/setup.py
index 969439f..7e669dd 100644
--- a/setup.py
+++ b/setup.py
@@ -11,6 +11,6 @@ setup(
     author_email='janjelle@jjkester.nl',
     description='Audit log app for Django',
     install_requires=[
-        'Django>=1.5'
+        'Django>=1.7'
     ]
 )
diff --git a/src/auditlog/__init__.py b/src/auditlog/__init__.py
index e69de29..baffc48 100644
--- a/src/auditlog/__init__.py
+++ b/src/auditlog/__init__.py
@@ -0,0 +1 @@
+from __future__ import unicode_literals
diff --git a/src/auditlog/diff.py b/src/auditlog/diff.py
index e92855c..b8194e2 100644
--- a/src/auditlog/diff.py
+++ b/src/auditlog/diff.py
@@ -1,5 +1,8 @@
+from __future__ import unicode_literals
+
 from django.core.exceptions import ObjectDoesNotExist
 from django.db.models import Model
+from django.utils.encoding import smart_text
 
 
 def model_instance_diff(old, new, **kwargs):
@@ -11,9 +14,9 @@ def model_instance_diff(old, new, **kwargs):
     from auditlog.registry import auditlog
 
     if not(old is None or isinstance(old, Model)):
-        raise TypeError('The supplied old instance is not a valid model instance.')
+        raise TypeError("The supplied old instance is not a valid model instance.")
     if not(new is None or isinstance(new, Model)):
-        raise TypeError('The supplied new instance is not a valid model instance.')
+        raise TypeError("The supplied new instance is not a valid model instance.")
 
     diff = {}
 
@@ -45,12 +48,12 @@ def model_instance_diff(old, new, **kwargs):
 
     for field in fields:
         try:
-            old_value = unicode(getattr(old, field.name, None))
+            old_value = smart_text(getattr(old, field.name, None))
         except ObjectDoesNotExist:
             old_value = None
 
         try:
-            new_value = unicode(getattr(new, field.name, None))
+            new_value = smart_text(getattr(new, field.name, None))
         except ObjectDoesNotExist:
             new_value = None
 
diff --git a/src/auditlog/middleware.py b/src/auditlog/middleware.py
index a61f65f..b62a9f4 100644
--- a/src/auditlog/middleware.py
+++ b/src/auditlog/middleware.py
@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 import time
 
 from django.conf import settings
diff --git a/src/auditlog/migrations/0002_auto_support_long_primary_keys.py b/src/auditlog/migrations/0002_auto_support_long_primary_keys.py
index 3da4843..5ea87f6 100644
--- a/src/auditlog/migrations/0002_auto_support_long_primary_keys.py
+++ b/src/auditlog/migrations/0002_auto_support_long_primary_keys.py
@@ -15,6 +15,5 @@ class Migration(migrations.Migration):
             model_name='logentry',
             name='object_id',
             field=models.BigIntegerField(db_index=True, null=True, verbose_name='object id', blank=True),
-            preserve_default=True,
         ),
     ]
diff --git a/src/auditlog/models.py b/src/auditlog/models.py
index 8c4cf3c..ad0184b 100644
--- a/src/auditlog/models.py
+++ b/src/auditlog/models.py
@@ -1,9 +1,13 @@
+from __future__ import unicode_literals
+
 import json
 
 from django.conf import settings
 from django.contrib.contenttypes import generic
 from django.contrib.contenttypes.models import ContentType
 from django.db import models
+from django.utils.encoding import python_2_unicode_compatible, smart_text
+from django.utils.six import iteritems, integer_types
 from django.utils.translation import ugettext_lazy as _
 
 
@@ -23,9 +27,9 @@ class LogEntryManager(models.Manager):
         if changes is not None:
             kwargs.setdefault('content_type', ContentType.objects.get_for_model(instance))
             kwargs.setdefault('object_pk', pk)
-            kwargs.setdefault('object_repr', str(instance))
+            kwargs.setdefault('object_repr', smart_text(instance))
 
-            if isinstance(pk, (int, long)):
+            if isinstance(pk, integer_types):
                 kwargs.setdefault('object_id', pk)
 
             # Delete log entries with the same pk as a newly created model. This should only be necessary when an pk is
@@ -50,7 +54,7 @@ class LogEntryManager(models.Manager):
         content_type = ContentType.objects.get_for_model(instance.__class__)
         pk = self._get_pk_value(instance)
 
-        if isinstance(pk, (int, long)):
+        if isinstance(pk, integer_types):
             return self.filter(content_type=content_type, object_id=pk)
         else:
             return self.filter(content_type=content_type, object_pk=pk)
@@ -80,6 +84,7 @@ class LogEntryManager(models.Manager):
         return pk
 
 
+@python_2_unicode_compatible
 class LogEntry(models.Model):
     """
     Represents an entry in the audit log. The content type is saved along with the textual and numeric (if available)
@@ -124,7 +129,7 @@ class LogEntry(models.Model):
         verbose_name = _("log entry")
         verbose_name_plural = _("log entries")
 
-    def __unicode__(self):
+    def __str__(self):
         if self.action == self.Action.CREATE:
             fstring = _("Created {repr:s}")
         elif self.action == self.Action.UPDATE:
@@ -147,7 +152,7 @@ class LogEntry(models.Model):
             return {}
 
     @property
-    def changes_str(self, colon=': ', arrow=u' \u2192 ', separator='; '):
+    def changes_str(self, colon=': ', arrow=smart_text(' \u2192 '), separator='; '):
         """
         Return the changes recorded in this log entry as a string. The formatting of the string can be customized by
         setting alternate values for colon, arrow and separator. If the formatting is still not satisfying, please use
@@ -155,8 +160,8 @@ class LogEntry(models.Model):
         """
         substrings = []
 
-        for field, values in self.changes_dict.iteritems():
-            substring = u'{field_name:s}{colon:s}{old:s}{arrow:s}{new:s}'.format(
+        for field, values in iteritems(self.changes_dict):
+            substring = smart_text('{field_name:s}{colon:s}{old:s}{arrow:s}{new:s}').format(
                 field_name=field,
                 colon=colon,
                 old=values[0],
@@ -196,5 +201,6 @@ class AuditlogHistoryField(generic.GenericRelation):
 try:
     from south.modelsinspector import add_introspection_rules
     add_introspection_rules([], ["^auditlog\.models\.AuditlogHistoryField"])
+    raise DeprecationWarning("South support will be dropped in django-auditlog 0.4.0 or later.")
 except ImportError:
     pass
diff --git a/src/auditlog/receivers.py b/src/auditlog/receivers.py
index 1fd8349..016fc2e 100644
--- a/src/auditlog/receivers.py
+++ b/src/auditlog/receivers.py
@@ -1,4 +1,7 @@
+from __future__ import unicode_literals
+
 import json
+
 from auditlog.diff import model_instance_diff
 from auditlog.models import LogEntry
 
diff --git a/src/auditlog/registry.py b/src/auditlog/registry.py
index bd791dd..0a530bd 100644
--- a/src/auditlog/registry.py
+++ b/src/auditlog/registry.py
@@ -1,14 +1,16 @@
+from __future__ import unicode_literals
+
 from django.db.models.signals import pre_save, post_save, post_delete
 from django.db.models import Model
 
 
-class AuditLogModelRegistry(object):
+class AuditlogModelRegistry(object):
     """
     A registry that keeps track of the models that use Auditlog to track changes.
     """
-
     def __init__(self, create=True, update=True, delete=True, custom=None):
         from auditlog.receivers import log_create, log_update, log_delete
+
         self._registry = {}
         self._signals = {}
 
@@ -37,7 +39,7 @@ class AuditLogModelRegistry(object):
             }
             self._connect_signals(model)
         else:
-            raise TypeError('Supplied model is not a valid model.')
+            raise TypeError("Supplied model is not a valid model.")
 
     def contains(self, model):
         """
@@ -83,4 +85,11 @@ class AuditLogModelRegistry(object):
             'exclude_fields': self._registry[model]['exclude_fields'],
         }
 
-auditlog = AuditLogModelRegistry()
+
+class AuditLogModelRegistry(AuditlogModelRegistry):
+    def __init__(self, *args, **kwargs):
+        super(AuditLogModelRegistry, self).__init__(*args, **kwargs)
+        raise DeprecationWarning("Use AuditlogModelRegistry instead of AuditLogModelRegistry, AuditLogModelRegistry will be removed in django-auditlog 0.4.0 or later.")
+
+
+auditlog = AuditlogModelRegistry()
diff --git a/src/testapp/models.py b/src/testapp/models.py
index 4d5d0eb..9a05d26 100644
--- a/src/testapp/models.py
+++ b/src/testapp/models.py
@@ -86,4 +86,4 @@ auditlog.register(SimpleModel)
 auditlog.register(AltPrimaryKeyModel)
 auditlog.register(ProxyModel)
 auditlog.register(SimpleIncludeModel, include_fields=['label', ])
-auditlog.register(SimpleExcludeModel, exclude_fields=['label', ])
+auditlog.register(SimpleExcludeModel, exclude_fields=['text', ])
diff --git a/src/testapp/tests.py b/src/testapp/tests.py
index 53c73ae..80e36dd 100644
--- a/src/testapp/tests.py
+++ b/src/testapp/tests.py
@@ -165,7 +165,7 @@ class SimpeExcludeModelTest(TestCase):
     """Log only changes that are not in exclude_fields"""
 
     def test_register_exclude_fields(self):
-        sem = SimpleIncludeModel(label='Exclude model', text='Looong text')
+        sem = SimpleExcludeModel(label='Exclude model', text='Looong text')
         sem.save()
         self.assertTrue(sem.history.count() == 1, msg="There is one log entry")