diff --git a/tox.ini b/tox.ini
index 66559e1..7a4618d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,6 @@
 [tox]
 envlist = py{38,39,310,311}-pillow{80,90,-latest},pypy3,check
 skip_missing_interpreters = true
-isolated_build = true
 
 [gh-actions]
 python =
@@ -12,6 +11,8 @@ python =
     pypy3: pypy3
 
 [testenv]
+package = wheel
+wheel_build_env = .pkg
 deps =
     pillow80: Pillow==8.0.1
     pillow90: Pillow==9.0.1