diff --git a/doc/requirements.txt b/doc/requirements.txt
index 5fea674f4e..0181c1a37d 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -9,3 +9,4 @@ openstackdocstheme>=2.2.1 # Apache-2.0
 reno>=3.1.0 # Apache-2.0
 doc8>=0.8.1 # Apache-2.0
 bashate>=0.6.0 # Apache-2.0
+netaddr>=0.8.0 # BSD
diff --git a/tox.ini b/tox.ini
index 85ea7c2612..168de826b7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -24,7 +24,7 @@ passenv =
     TESTING_BRANCH
     TESTING_HOME
     USER
-whitelist_externals =
+allowlist_externals =
     bash
 setenv =
     PYTHONUNBUFFERED=1
@@ -51,7 +51,7 @@ commands = sphinx-build -a -E -W -d deploy-guide/build/doctrees --keep-going -b
 
 [testenv:pdf-docs]
 deps = {[testenv:docs]deps}
-whitelist_externals =
+allowlist_externals =
   make
 commands =
   sphinx-build -W --keep-going -b latex doc/source doc/build/pdf