diff --git a/tox.ini b/tox.ini
index bf5163c7..e78ee7d6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -15,3 +15,6 @@ commands = flake8 cliff docs/source/conf.py setup.py
 
 [testenv:py26]
 basepython=python2.6
+
+[testenv:venv]
+commands = {posargs}