diff --git a/tox.ini b/tox.ini
index 72ff9ee..e6eccd3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -55,7 +55,7 @@ extras =
   sql
 commands =
   doc8 -e .rst doc/source CONTRIBUTING.rst README.rst
-  python setup.py build_sphinx
+  sphinx-build -W -T --keep-going -b html doc/source doc/build/html
 
 [testenv:releasenotes]
 commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html