diff --git a/tox.ini b/tox.ini
index f37fce81..aebfd8c2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-minversion = 2.3.1
+minversion = 3.18.0
 envlist = py38,pep8
 skipsdist = True
 
@@ -16,7 +16,7 @@ deps =
        -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-whitelist_externals = sh
+allowlist_externals = sh
                       find
 commands = find . -type f -name "*.py[c|o]" -delete
            stestr run {posargs}