diff --git a/ext/ctype/tests/lc_ctype_inheritance.phpt b/ext/ctype/tests/lc_ctype_inheritance.phpt
index 6f37941d8f4..ba5ea177c38 100644
--- a/ext/ctype/tests/lc_ctype_inheritance.phpt
+++ b/ext/ctype/tests/lc_ctype_inheritance.phpt
@@ -4,6 +4,9 @@ Do not inherit LC_CTYPE from environment
 ctype
 --SKIPIF--
 <?php
+if (PHP_OS_FAMILY === 'Darwin' && version_compare(php_uname('r'), '24.0.0', '>=')) {
+    die('skip macOS 15 inherits LC_CTYPE into the thread locale');
+}
 if (setlocale(LC_ALL, 'invalid') === 'invalid') { die('skip setlocale() is broken /w musl'); }
 if (!setlocale(LC_CTYPE, "de_DE", "de-DE")) die("skip requires de_DE locale");
 ?>