--- libmalloc/libmalloc-166.251.2/tests/magazine_rack.c
+++ libmalloc/libmalloc-283/tests/magazine_rack.c
@@ -8,6 +8,8 @@
 
 #include <darwintest.h>
 #include "magazine_testing.h"
+
+T_GLOBAL_META(T_META_RUN_CONCURRENTLY(true));
 
 T_DECL(basic_magazine_init, "allocate magazine counts")
 {