diff --git a/tox.ini b/tox.ini
index 270a4886b..8bf55d928 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,7 +16,7 @@ deps =
   -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
   -r{toxinidir}/doc/requirements.txt
 commands =
-  sphinx-build -a -E -W -d doc/build/doctrees -b html doc/source doc/build/html {posargs}
+  sphinx-build -a -E -W --keep-going -d doc/build/doctrees -b html doc/source doc/build/html {posargs}
 
 [testenv:api-ref]
 deps = {[testenv:docs]deps}