diff --git a/mypy/stubtest.py b/mypy/stubtest.py
index 7b4a3b223e00..4e038cfd75d1 100644
--- a/mypy/stubtest.py
+++ b/mypy/stubtest.py
@@ -1393,6 +1393,9 @@ def verify_typealias(
         "__dataclass_fields__",  # Generated by dataclasses
         "__dataclass_params__",  # Generated by dataclasses
         "__doc__",  # mypy's semanal for namedtuples assumes this is str, not Optional[str]
+        # Added to all protocol classes on 3.12+ (or if using typing_extensions.Protocol)
+        "__protocol_attrs__",
+        "__callable_proto_members_only__",
         # typing implementation details, consider removing some of these:
         "__parameters__",
         "__origin__",