diff --git a/tox.ini b/tox.ini
index ad7818ea..1291bffc 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = unit,driver,style,py3unit,py3driver
+envlist = unit,driver,style,py3clean,py3unit,py3driver
 skipsdist = True
 
 [testenv]
@@ -30,6 +30,10 @@ deps =
 commands =
     python ./tools/cpep8.py
 
+[textenv:py3clean]
+commands =
+    py3clean chirp tests
+
 [testenv:py3unit]
 basepython = python3
 sitepackages = False