diff --git a/tox.ini b/tox.ini
index df1f24d2..154ee400 100644
--- a/tox.ini
+++ b/tox.ini
@@ -34,7 +34,7 @@ commands =
 skip_install = true
 # Make the install step a no-op, so nothing gets installed in the env
 install_command = true {packages}
-whitelist_externals = true
+allowlist_externals = true
 changedir = flit_core
 commands =
     python -c "from flit_core.buildapi import build_wheel;\