diff --git a/tox.ini b/tox.ini
index 1ce78de426..c03b22768c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py27, py27-integration, flake8
+envlist = docs, py27, py27-integration, flake8
 
 [testenv:py27]
 sitepackages=True