diff --git a/vendor/symposion/sponsorship/tests.py b/vendor/symposion/sponsorship/tests.py
index a6eae66bd66e0d7947c1910f29c9a0de324d5fd7..c99ad45f8628d7b4c3e6738168d77ae5517bb807 100644
--- a/vendor/symposion/sponsorship/tests.py
+++ b/vendor/symposion/sponsorship/tests.py
@@ -1,20 +1,22 @@
-from cStringIO import StringIO
+from io import StringIO
 import os
 import shutil
 import tempfile
 from zipfile import ZipFile
 
 from django.conf import settings
-from django.contrib.auth.models import User
+from django.contrib.auth import get_user_model
 from django.core.exceptions import ValidationError
-from django.core.urlresolvers import reverse
 from django.test import TestCase
 from django.test.utils import override_settings
+from django.urls import reverse
 
 from pycon.sponsorship.models import Benefit, Sponsor, SponsorBenefit,\
     SponsorLevel
 from symposion.conference.models import current_conference
 
+User = get_user_model()
+
 
 class TestSponsorZipDownload(TestCase):
     def setUp(self):