diff --git a/tox.ini b/tox.ini
index 33b4bc6e..fc4f75ec 100644
--- a/tox.ini
+++ b/tox.ini
@@ -15,15 +15,18 @@ commands = ostestr {posargs}
 sitepackages = True
 
 [testenv:pep8]
+basepython = python3
 whitelist_externals = bash
 commands = bash -c 'pycodestyle pyghmi bin/*'
 
 [testenv:cover]
+basepython = python3
 setenv = VIRTUAL_ENV={envdir}
 commands =
   python setup.py testr --coverage
 
 [testenv:venv]
+basepython = python3
 commands = {posargs}
 
 [flake8]