diff --git a/tox.ini b/tox.ini
index a498e52..bac7c76 100644
--- a/tox.ini
+++ b/tox.ini
@@ -24,6 +24,10 @@ commands = {posargs}
 [testenv:cover]
 commands = python setup.py testr --coverage --testr-args='{posargs}'
 
+[testenv:docs]
+commands=
+    python setup.py build_sphinx
+
 [tox:jenkins]
 downloadcache = ~/cache/pip