1 files changed, 1 insertions, 1 deletions
diff --git a/tox.ini b/tox.ini
index 5a46e8c..0210bf3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -42,7 +42,7 @@ deps =
        -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/doc/requirements.txt
-commands = sphinx-build -b html doc/source doc/build/html
+commands = sphinx-build -b html -W doc/source doc/build/html
 
 [testenv:functional]
 # This tox env is purely to make local test development easier