diff --git a/tox.ini b/tox.ini
index 6bcc193..6b34b19 100644
--- a/tox.ini
+++ b/tox.ini
@@ -19,6 +19,7 @@ setenv =
   JUNIT={tty::-o junit_suite_name={envname} --junit-xml=junit-{envname}.xml}
   WCS_MANAGE=wcs/manage.py
   PGDATABASE=postgres
+  SETUPTOOLS_USE_DISTUTILS=stdlib
 deps =
   pytest
   pytest-cov