1 files changed, 2 insertions, 1 deletions
diff --git a/tox.ini b/tox.ini
index 8510c58cf..09b93e82a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,8 @@
 [tox]
-minversion = 2.5.0
+minversion = 3.1
 skipsdist = True
 envlist = pep8,py37,pypy
+ignore_basepython_conflict = True
 
 [testenv]
 basepython = python3