diff --git a/tox.ini b/tox.ini
index d426535ec..8bf2aca97 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-minversion = 3.1.0
+minversion = 3.18.0
 skipsdist = True
 skip_missing_interpreters = true
 # python runtimes: https://governance.openstack.org/tc/reference/runtimes/ussuri.html
@@ -31,7 +31,7 @@ commands =
     stestr run {posargs}
     stestr slowest
 
-whitelist_externals = bash
+allowlist_externals = bash
                       find
 passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
 
@@ -79,7 +79,7 @@ deps =
 commands =
   rm -fr doc/build doc/source/contributor/api/ .autogenerated
   sphinx-build -W -b html -d doc/build/doctrees doc/source doc/build/html
-whitelist_externals = rm
+allowlist_externals = rm
 
 
 [testenv:pdf-docs]
@@ -87,7 +87,7 @@ deps = {[testenv:docs]deps}
 commands = {[testenv:docs]commands}
   sphinx-build -W -b latex doc/source doc/build/pdf
   make -C doc/build/pdf
-whitelist_externals =
+allowlist_externals =
   make
 
 [testenv:releasenotes]