diff --git a/.travis.yml b/.travis.yml
index f0b3086..3f47794 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,9 @@ language: python
 
 python:
   - "2.7"
+  - "3.4"
+  - "3.5"
+  - "3.6"
 
 before_install:
   - "pip install --upgrade pip wheel"
diff --git a/rest_framework_httpsignature/authentication.py b/rest_framework_httpsignature/authentication.py
index 5e31600..0386b73 100644
--- a/rest_framework_httpsignature/authentication.py
+++ b/rest_framework_httpsignature/authentication.py
@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 from rest_framework import authentication
 from rest_framework import exceptions
 from httpsig import HeaderSigner
diff --git a/rest_framework_httpsignature/tests.py b/rest_framework_httpsignature/tests.py
index e2eda6e..9baa529 100644
--- a/rest_framework_httpsignature/tests.py
+++ b/rest_framework_httpsignature/tests.py
@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 from django.test import SimpleTestCase, TestCase, RequestFactory
 from django.contrib.auth import get_user_model
 from rest_framework_httpsignature.authentication import SignatureAuthentication
@@ -137,7 +139,7 @@ def test_build_signature(self):
         signature_string = self.auth.build_signature(
             self.KEYID, SECRET, req)
         signature = re.match(
-            '.*signature="(.+)",?.*', signature_string).group(1)
+            r'.*signature="(.*?)",?.*', signature_string).group(1)
         self.assertEqual(expected_signature, signature)
 
 
diff --git a/setup.py b/setup.py
index 3bdd684..8748b99 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,13 @@
         'Environment :: Web Environment',
         'Framework :: Django',
         'Operating System :: OS Independent',
+        'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: Implementation :: CPython',
         'License :: OSI Approved :: MIT License',
         'Topic :: Internet :: WWW/HTTP',
         'Topic :: Security',
diff --git a/test_settings.py b/test_settings.py
index deb178e..c0d9d7d 100644
--- a/test_settings.py
+++ b/test_settings.py
@@ -12,6 +12,4 @@
     'rest_framework_httpsignature',
 )
 
-ROOT_URLCONF = 'rest_framework_httpsignature.tests'
-
 SECRET_KEY = 'MY PRIVATE SECRET'