diff --git a/doc/requirements.txt b/doc/requirements.txt
new file mode 100644
index 0000000..ae18448
--- /dev/null
+++ b/doc/requirements.txt
@@ -0,0 +1,7 @@
+# These are needed for docs generation
+openstackdocstheme>=1.17.0 # Apache-2.0
+sphinx>=1.6.2 # BSD
+reno>=2.5.0 # Apache-2.0
+
+mock>=2.0.0 # BSD
+fixtures>=3.0.0 # Apache-2.0/BSD
diff --git a/tox.ini b/tox.ini
index 94b3d6b..c152eca 100644
--- a/tox.ini
+++ b/tox.ini
@@ -34,7 +34,8 @@ commands =
 commands = {posargs}
 
 [testenv:docs]
-commands = python setup.py build_sphinx
+deps = -r{toxinidir}/doc/requirements.txt
+commands = sphinx-build -b html doc/source doc/build/html
 
 [flake8]
 show-source = True
@@ -52,4 +53,5 @@ deps = pip_missing_reqs
 commands = pip-missing-reqs -d --ignore-module=oslo_rootwrap* --ignore-module=pkg_resources --ignore-file=oslo_rootwrap/test.py --ignore-file=oslo_rootwrap/tests/* oslo_rootwrap
 
 [testenv:releasenotes]
+deps = -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html