diff --git a/tox.ini b/tox.ini
index 5775335..0a13ad6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist = pep8,py35,py36,py37,py27
-minversion = 2.0
+minversion = 3.18
 skipsdist = True
 
 [testenv]
@@ -14,7 +14,7 @@ deps = -r{toxinidir}/requirements.txt
 commands =
   stestr run {posargs}
 
-whitelist_externals =
+allowlist_externals =
     bash
     find
 distribute = false