diff --git a/tox.ini b/tox.ini
index dbfefa0..56dbb72 100644
--- a/tox.ini
+++ b/tox.ini
@@ -24,6 +24,10 @@ commands = python setup.py testr --coverage --testr-args='{posargs}'
 [testenv:venv]
 commands = {posargs}
 
+[testenv:docs]
+commands=
+    python setup.py build_sphinx
+
 [flake8]
 # H405 multi line docstring summary not separated with an empty line
 # H904 Wrap long lines in parentheses instead of a backslash