diff --git a/tox.ini b/tox.ini
index c932cef..c1a3bc1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,10 +1,8 @@
 [tox]
 minversion = 4.2.5
 envlist = py3,pep8
-ignore_basepython_conflict = True
 
 [testenv]
-basepython = python3
 usedevelop = True
 setenv =
   VIRTUAL_ENV={envdir}
@@ -20,7 +18,6 @@ deps =
 commands = stestr run --slowest {posargs} --test-path {env:OS_TEST_PATH}
 
 [testenv:pep8]
-basepython = python3
 deps = hacking>=7.0.0,<7.1.0
 commands = flake8