diff --git a/tox.ini b/tox.ini
index b9bffa5b..133e2e6d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -20,6 +20,11 @@ commands =
   find . -type f -name "*.pyc" -delete
   rm -Rf .testrepository/times.dbm
 
+[testenv:venv]
+basepython=python3
+commands =
+  {posargs}
+
 [testenv:py27]
 basepython = python2.7
 commands =