diff --git a/tox.ini b/tox.ini
index 167b0130..f6f197e4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,6 +21,9 @@ commands = {posargs}
 [testenv:cover]
 commands = python setup.py testr --coverage --testr-args='{posargs}'
 
+[testenv:docs]
+commands = python setup.py build_sphinx
+
 [flake8]
 # H803 skipped on purpose per list discussion.
 # E123, E125 skipped as they are invalid PEP-8.
@@ -28,4 +31,4 @@ commands = python setup.py testr --coverage --testr-args='{posargs}'
 show-source = True
 ignore = E123,E125,H803
 builtins = _
-exclude=.venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,build
\ No newline at end of file
+exclude=.venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,build