diff --git a/test-requirements.txt b/test-requirements.txt
index 30ee3e7fc..1ec65bd7b 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,6 +2,7 @@ hacking>=0.6,<0.8
 
 coverage
 discover
+docutils==0.9.1
 fixtures>=0.3.12
 jsonschema
 mock
diff --git a/tox.ini b/tox.ini
index ca4e4c101..4e0bfe3bf 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,11 @@
 [tox]
 envlist = py26,py27,pep8
+minversion = 1.6
+skipsdist = True
 
 [testenv]
+usedevelop = True
+install_command = pip install -U {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
          LANG=en_US.UTF-8
          LANGUAGE=en_US:en