diff --git a/tox.ini b/tox.ini
index 64beb7d50b..3e3ebc19d5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,6 @@ envlist = docs,py3,functional-py3,pep8,specs,pip-missing-reqs,pip-extra-reqs
 ignore_basepython_conflict = True
 
 [testenv]
-basepython = python3
 usedevelop = True
 setenv = VIRTUAL_ENV={envdir}
          PYTHONWARNINGS=default::DeprecationWarning