diff --git a/tox.ini b/tox.ini
index 907c2a008..6c7f19f7d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -49,6 +49,7 @@ commands =
 show-source=True
 ignore= H105,E123,E226,N320
 builtins= _
+enable-extensions = H106,H203
 exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build,*sqlalchemy/alembic/versions/*,demo/,releasenotes
 
 [testenv:wheel]