diff --git a/setup.cfg b/setup.cfg
index 06f5ce9..b80d023 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -19,6 +19,7 @@ classifier =
     Programming Language :: Python :: 2.7
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.4
+    Programming Language :: Python :: 3.5
     Topic :: Security
 
 [build_sphinx]
diff --git a/tox.ini b/tox.ini
index 25e512d..d496c6e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 1.6
-envlist = pypy,py27,py34,pep8,docs
+envlist = pypy,py35,py34,py27,pep8,docs
 skipsdist = True
 
 [testenv]