diff --git a/tox.ini b/tox.ini
index 32b8569da7..85ea7c2612 100644
--- a/tox.ini
+++ b/tox.ini
@@ -41,6 +41,9 @@ deps = -r{toxinidir}/doc/requirements.txt
 commands =
     doc8 doc
     docstheme-build-translated.sh
+setenv =
+    SPHINX_WARNINGS_TRANS=1
+
 
 [testenv:deploy-guide]
 deps = -r{toxinidir}/doc/requirements.txt