diff --git a/.zuul.yaml b/.zuul.yaml
index 561ce4e..a905cc0 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -1,6 +1,6 @@
 - project:
     templates:
-      - build-openstack-sphinx-docs
+      - build-openstack-docs-pti
     post:
       jobs:
         - publish-security
diff --git a/setup.cfg b/setup.cfg
index 68d1197..70486b3 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -12,6 +12,7 @@ home-page = http://www.openstack.org/
 all_files = 1
 build-dir = doc/build
 source-dir = doc/source
+warning-is-error = 1
 
 [pbr]
 warnerrors = True
diff --git a/tox.ini b/tox.ini
index 8de93d4..3800903 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = venv
+envlist = docs
 minversion = 1.6
 skipsdist = True
 
@@ -8,7 +8,13 @@ usedevelop = True
 install_command = pip install -U {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
 
+[testenv:docs]
+# The repo does not work with python3 yet, so no basepypthon set
+# to python3.
+deps = -r{toxinidir}/test-requirements.txt
+commands = sphinx-build -W -b html -d doc/build/doctrees doc/source doc/build/html
+
 [testenv:venv]
 basepython = python3
 deps = -r{toxinidir}/test-requirements.txt
-commands =python setup.py build_sphinx
+commands = {[testenv:docs]commands}