diff --git a/tox.ini b/tox.ini
index 5e2f54fd787..e0823dd9acb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -17,7 +17,8 @@ basepython = python3
 
 [testenv]
 usedevelop = true
-passenv = DJANGO_SETTINGS_MODULE PYTHONPATH HOME DISPLAY
+# OBJC_DISABLE_INITIALIZE_FORK_SAFETY fixes hung tests for MacOS users. (#30806)
+passenv = DJANGO_SETTINGS_MODULE PYTHONPATH HOME DISPLAY OBJC_DISABLE_INITIALIZE_FORK_SAFETY
 setenv =
     PYTHONDONTWRITEBYTECODE=1
 deps =