diff --git a/tox.ini b/tox.ini
index 1928e5ce..2b89acc3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -27,6 +27,9 @@ commands = bash -c 'if [ ! -d ./.testrepository ] ; then testr init ; fi'
 [tox:jenkins]
 downloadcache = ~/cache/pip
 
+[testenv:docs]
+commands = python setup.py build_sphinx
+
 [flake8]
 ignore = E125,H202,H302,H803
 builtins = _