diff --git a/tox.ini b/tox.ini
index 76e4e76..fbfac02 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,6 +8,7 @@ commands = {envpython} -m unittest discover --start-directory ./tests
 [testenv:flake8]
 deps =
 	flake8
+	flake8-bugbear
 	flake8-tabs
 commands = flake8