diff --git a/tox.ini b/tox.ini
index 10df4fe1f734..920e0c6a1901 100644
--- a/tox.ini
+++ b/tox.ini
@@ -51,7 +51,7 @@ setenv =
 deps =
   -r{toxinidir}/requirements-dev.txt
 commands =
-  sphinx-build -W -b html -j auto docs/ docs/_build/html {posargs}
+  sphinx-build -W -b html docs/ docs/_build/html {posargs}
 
 [pycodestyle]
 max-line-length = 105