diff --git a/tox.ini b/tox.ini
index 2ca4fefd5..c1da17bc8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -35,6 +35,9 @@ commands = python setup.py testr --coverage --testr-args='{posargs}'
 passenv = HOME USER
 commands = {toxinidir}/extras/run-ansible-tests.sh -e {envdir} {posargs}
 
+[testenv:docs]
+commands = python setup.py build_sphinx
+
 [flake8]
 # Infra does not follow hacking, nor the broken E12* things
 ignore = E123,E125,E129,H