diff --git a/tox.ini b/tox.ini
index 7704662..aee1c0d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,6 +21,7 @@ deps =
 setenv =
     py312: VIRTUALENV_PIP=23.1.2
     py312: PIP_REQUIRE_VIRTUALENV=0
+    universal2: UNIVERSAL2=1
 commands_pre =
     {envbindir}/buildout -nc {toxinidir}/buildout.cfg buildout:directory={envdir} buildout:develop={toxinidir} install test
 commands =