diff --git a/tox.ini b/tox.ini
index 607f5c3..e1222b8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,6 +11,9 @@ commands = python setup.py testr --slowest --testr-args='{posargs}'
 basepython = /usr/bin/python3
 commands = flake8
 
+[testenv:venv]
+commands = {posargs}
+
 [flake8]
 ignore = E121,E122,E123,E124,E125,E126,E127,E128,E129,E131,E251,H405
 exclude = venv,.venv,.git,.tox,dist,doc,*lib/python*,*egg,build