diff --git a/mypy/stubtest.py b/mypy/stubtest.py
index 0e8a1c3ceac2..c2f82c98d089 100644
--- a/mypy/stubtest.py
+++ b/mypy/stubtest.py
@@ -1486,6 +1486,7 @@ def verify_typealias(
         # Added to all protocol classes on 3.12+ (or if using typing_extensions.Protocol)
         "__protocol_attrs__",
         "__callable_proto_members_only__",
+        "__non_callable_proto_members__",
         # typing implementation details, consider removing some of these:
         "__parameters__",
         "__origin__",