diff --git a/tox.ini b/tox.ini
index 5bb2268c4f..ec764abc87 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-minversion = 1.6
+minversion = 3.18.0
 skipsdist = True
 envlist = bashate
 
@@ -13,7 +13,7 @@ basepython = python3
 # modified bashate tree
 deps =
    {env:BASHATE_INSTALL_PATH:bashate==2.0.0}
-whitelist_externals = bash
+allowlist_externals = bash
 commands = bash -c "find {toxinidir}             \
          -not \( -type d -name .?\* -prune \)    \
          -not \( -type d -name doc -prune \)     \
@@ -37,7 +37,7 @@ commands = bash -c "find {toxinidir}             \
 deps =
   -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
   -r{toxinidir}/doc/requirements.txt
-whitelist_externals = bash
+allowlist_externals = bash
 setenv =
   TOP_DIR={toxinidir}
 commands =
@@ -45,7 +45,7 @@ commands =
 
 [testenv:pdf-docs]
 deps = {[testenv:docs]deps}
-whitelist_externals =
+allowlist_externals =
    make
 commands =
    sphinx-build -W -b latex doc/source doc/build/pdf