--- a/setup.py	2014-01-31
+++ b/setup.py	2017-08-31
@@ -14,17 +14,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from distutils.core import setup
-
-import ipaddr
+from setuptools import setup
+from pkginfo import UnpackedSDist
 
 
 setup(name='ipaddr',
       maintainer='Google',
       maintainer_email='ipaddr-py-dev@googlegroups.com',
-      version=ipaddr.__version__,
       url='http://code.google.com/p/ipaddr-py/',
       license='Apache License, Version 2.0',
+      version=UnpackedSDist('.').version,
+      use_2to3=True,
       classifiers=[
           'Development Status :: 5 - Production/Stable',
           'Intended Audience :: Developers',