diff --git a/reviewboard/changedescs/admin.py b/reviewboard/changedescs/admin.py
index 072e0549f30110d3a59051736f7ccf6422cd182b..bbc71fa202d9a7dea04332682f0223064e7c3daa 100644
--- a/reviewboard/changedescs/admin.py
+++ b/reviewboard/changedescs/admin.py
@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 from django.contrib import admin
 from django.template.defaultfilters import truncatechars
 from django.utils.translation import ugettext_lazy as _
diff --git a/reviewboard/changedescs/evolutions/__init__.py b/reviewboard/changedescs/evolutions/__init__.py
index bd0869a20a6805c82e6660c02ebac1f6e60d0efb..bdd68076f64a27e63c54d1f322d62df716062162 100644
--- a/reviewboard/changedescs/evolutions/__init__.py
+++ b/reviewboard/changedescs/evolutions/__init__.py
@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 from django.conf import settings
 
 
diff --git a/reviewboard/changedescs/evolutions/fields_changed_longtext.py b/reviewboard/changedescs/evolutions/fields_changed_longtext.py
index a9bb2ad901245e2f2f354d1628faec33f159b396..6c9342bbc15d7ff6ae313159946a23917082dc00 100644
--- a/reviewboard/changedescs/evolutions/fields_changed_longtext.py
+++ b/reviewboard/changedescs/evolutions/fields_changed_longtext.py
@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 from django_evolution.mutations import SQLMutation
 
 
diff --git a/reviewboard/changedescs/evolutions/rich_text.py b/reviewboard/changedescs/evolutions/rich_text.py
index 1a81a554d4f1068324061b6222058f8fcac96729..a469ec1bdf8d934a0fa08ef31e00bf5a69c10aa6 100644
--- a/reviewboard/changedescs/evolutions/rich_text.py
+++ b/reviewboard/changedescs/evolutions/rich_text.py
@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 from django_evolution.mutations import AddField
 from django.db import models
 
diff --git a/reviewboard/changedescs/models.py b/reviewboard/changedescs/models.py
index 4f717c6bd4bf33fd8b965750ced8394c3e2edc26..18f01985c4354f322c052bf366418eee7759de4d 100644
--- a/reviewboard/changedescs/models.py
+++ b/reviewboard/changedescs/models.py
@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 from django.db import models
 from django.utils import six, timezone
 from django.utils.encoding import python_2_unicode_compatible
diff --git a/reviewboard/changedescs/tests.py b/reviewboard/changedescs/tests.py
index a4d049227974a4b1ae2d79333825e0c382d25b90..b0873901f5f14914ad33d85ea2ce1794dfdbac59 100644
--- a/reviewboard/changedescs/tests.py
+++ b/reviewboard/changedescs/tests.py
@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 from django.test import TestCase
 
 from reviewboard.changedescs.models import ChangeDescription