diff --git a/tox.ini b/tox.ini
index e2659ef..b6290c8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,7 +3,7 @@ envlist = py37
 isolated_build = true
 
 [testenv]
-whitelist_externals = poetry
+allowlist_externals = poetry
 commands =
     poetry install
     poetry run coverage run -m unittest discover -s test