diff --git a/dev-requirements.txt b/dev-requirements.txt
index 4647398d..58c218e8 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -3,3 +3,4 @@
 Sphinx==1.2.3
 pytest==2.6.4
 ws4py==0.3.4
+pep8==1.5.7
diff --git a/tox.ini b/tox.ini
index 200e7ce4..74d58489 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,3 +5,6 @@ envlist = py33, py34
 commands = python setup.py test
 deps = -rdev-requirements.txt
 
+[pep8]
+ignore = E501
+