diff --git a/tox.ini b/tox.ini
index 2c2f0235..5c148aa4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-minversion = 3.1.1
+minversion = 3.18.0
 skipsdist = True
 envlist = py37,pep8,releasenotes
 ignore_basepython_conflict = True
@@ -65,7 +65,7 @@ commands=
 [testenv:pdf-docs]
 envdir = {toxworkdir}/docs
 deps = {[testenv:docs]deps}
-whitelist_externals =
+allowlist_externals =
   make
   rm
 commands =