diff --git a/tox.ini b/tox.ini
index 13f3d40..c578034 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
-minversion = 3.1.1
-envlist = py37,pep8
+minversion = 3.18.0
+envlist = py3,pep8
 ignore_basepython_conflict = True
 
 [testenv]