diff --git a/tox.ini b/tox.ini
index 5a54fe0..741ff41 100644
--- a/tox.ini
+++ b/tox.ini
@@ -25,7 +25,7 @@ commands =
 [testenv:pdf-docs]
 deps = {[testenv:docs]deps}
 envdir = {toxworkdir}/docs
-whitelist_externals =
+allowlist_externals =
   make
 commands =
   sphinx-build -b latex doc/source doc/build/pdf