diff --git a/setup.cfg b/setup.cfg
index a77e125..3ef28b2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -18,6 +18,7 @@ classifier =
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.3
     Programming Language :: Python :: 3.4
+    Programming Language :: Python :: 3.5
 
 [files]
 packages =
diff --git a/tox.ini b/tox.ini
index 58b9fba..702d2c9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 1.6
-envlist = py27,pep8
+envlist = py35,py34,py27,pep8
 skipsdist = True
 
 [testenv]