diff --git a/tox.ini b/tox.ini
index 3db4bfb7b..1ac7dc05e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -20,6 +20,9 @@ commands =
 [testenv:venv]
 commands = {posargs}
 
+[testenv:docs]
+commands = python setup.py build_sphinx
+
 [flake8]
 show-source = True
 ignore = E226,E241,E265,E714,H237,H305,H307,H402,H405,H904