diff --git a/tox.ini b/tox.ini
index 6bc2e9ac81..30b644e65f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -48,6 +48,9 @@ commands = {toxinidir}/tools/config/generate_sample.sh -b . -p cinder -o etc/cin
 [testenv:venv]
 commands = {posargs}
 
+[testenv:docs]
+commands = python setup.py build_sphinx
+
 [flake8]
 # Following checks are ignored on purpose.
 #