diff --git a/tox.ini b/tox.ini
index 1f9e22a..7cd7474 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-minversion = 3.1.1
+minversion = 3.18.0
 envlist = py3,pep8
 skipsdist = True
 ignore_basepython_conflict = True
@@ -37,7 +37,7 @@ commands =
 [testenv:docs]
 deps = -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
        -r{toxinidir}/doc/requirements.txt
-whitelist_externals =
+allowlist_externals =
   rm
 commands =
   rm -fr doc/build
@@ -45,7 +45,7 @@ commands =
 
 [testenv:releasenotes]
 deps = {[testenv:docs]deps}
-whitelist_externals =
+allowlist_externals =
   rm
 commands =
   rm -rf releasenotes/build