diff --git a/test-requirements.txt b/test-requirements.txt
index 6baf3e9..c17aa34 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -7,6 +7,7 @@ hacking<0.11,>=0.10.0
 # Used for making sure the eventlet executors work.
 eventlet>=0.17.4
 
+doc8 # Apache-2.0
 coverage>=3.6
 discover
 python-subunit>=0.0.18
diff --git a/tox.ini b/tox.ini
index 25c4b07..0c5cfca 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,8 +22,6 @@ commands = {posargs}
 commands = python setup.py test --coverage --testr-args='{posargs}'
 
 [testenv:py27]
-deps = {[testenv]deps}
-    doc8
 commands =
     python setup.py testr --slowest --testr-args='{posargs}'
     sphinx-build -b doctest doc/source doc/build