diff --git a/tox.ini b/tox.ini
index 65b2a709..4c654c2a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,6 +2,7 @@
 minversion = 3.1.1
 envlist = py37,py27,pep8
 skipsdist = True
+ignore_basepython_conflict = True
 
 [testenv]
 basepython = python3