2 files changed, 1 insertions, 1 deletions

diff --git a/cryptography/primitives/interfaces.py b/cryptography/primitives/interfaces.py
index a2b091df..6f74ccf7 100644
--- a/cryptography/primitives/interfaces.py
+++ b/cryptography/primitives/interfaces.py
@@ -14,6 +14,7 @@
 from __future__ import absolute_import, division, print_function
 
 import abc
+
 import six
 
 
diff --git a/tox.ini b/tox.ini
index 02d521b1..4d17ebe8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,7 +5,6 @@ envlist = py26,py27,pypy,py32,py33,docs,pep8
 deps =
     pytest-cov
     pretend
-    six
 commands = py.test --cov=cryptography/ --cov=tests/
 
 [testenv:docs]