diff --git a/tox.ini b/tox.ini
index 94add150..6661a21d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,7 +10,9 @@ install_command =
   {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-whitelist_externals = sh
+whitelist_externals =
+  find
+  sh
 commands =
   find . -type f -name "*.py[c|o]" -delete
   find . -type d -name "__pycache__" -delete