diff --git a/docs/tox.ini b/docs/tox.ini
index 7020752..4e99dc2 100644
--- a/docs/tox.ini
+++ b/docs/tox.ini
@@ -27,7 +27,7 @@
     -chttps://raw.githubusercontent.com/openstack/requirements/stable/yoga/upper-constraints.txt
     -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=master
 commands =
-    sphinx-build -q -b html -n -d {envtmpdir}/doctrees {toxinidir} {toxinidir}/_build/html
+    sphinx-build -W -q -b html -n -d {envtmpdir}/doctrees {toxinidir} {toxinidir}/_build/html
 [testenv:docs-linkcheck]
 basepython = python3.10
 deps =
@@ -35,7 +35,7 @@
     -chttps://raw.githubusercontent.com/openstack/requirements/stable/yoga/upper-constraints.txt
     -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=master
 commands =
-    sphinx-build -q -b linkcheck -d {envtmpdir}/doctrees {toxinidir} {toxinidir}/_build/linkcheck
+    sphinx-build -W -q -b linkcheck -d {envtmpdir}/doctrees {toxinidir} {toxinidir}/_build/linkcheck
 [testenv:docs-spellcheck]
 basepython = python3.10
 deps =