diff --git a/setup.cfg b/setup.cfg
index 9d22fc4a..f1c4098d 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -15,6 +15,9 @@ classifier =
     License :: OSI Approved :: Apache Software License
     Operating System :: OS Independent
     Programming Language :: Python
+    Programming Language :: Python :: 2.7
+    Programming Language :: Python :: 3.4
+    Programming Language :: Python :: 3.5
 
 [files]
 packages =
diff --git a/tox.ini b/tox.ini
index 06c275a9..563e332a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py34,py27,pep8
+envlist = py35,py34,py27,pep8
 minversion = 1.6
 skipsdist = True