diff --git a/tox.ini b/tox.ini
index f1160e7..8559ddf 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,6 +13,9 @@ commands = flake8
 [testenv:sdist]
 commands = python setup.py sdist {posargs}
 
+[testenv:venv]
+commands = {posargs}
+
 [flake8]
 ignore = E125
 show-source = True