diff --git a/tox.ini b/tox.ini
index ffbe246465..4968469903 100644
--- a/tox.ini
+++ b/tox.ini
@@ -58,4 +58,4 @@ commands = python setup.py test --slowest --testr-args='--concurrency=1 {posargs
 # please don't submit patches that solely correct them or enable them.
 ignore = E124,E125,E129,E402,E741,H,W503
 show-source = True
-exclude = .venv,.tox,dist,doc,build,*.egg
+exclude = .venv,.tox,dist,doc,build,*.egg,node_modules