Index: pydantic_settings-2.8.1/pydantic_settings/sources.py
===================================================================
--- pydantic_settings-2.8.1.orig/pydantic_settings/sources.py
+++ pydantic_settings-2.8.1/pydantic_settings/sources.py
@@ -45,6 +45,7 @@ from pydantic.dataclasses import is_pyda
 from pydantic.fields import FieldInfo
 from pydantic_core import PydanticUndefined
 from typing_extensions import Annotated, _AnnotatedAlias, get_args, get_origin
+from typing_inspection import typing_objects
 
 from pydantic_settings.utils import path_type_label
 
@@ -1996,7 +1997,7 @@ class CliSettingsSource(EnvSettingsSourc
             return '...'
         elif isinstance(obj, Representation):
             return repr(obj)
-        elif isinstance(obj, typing_extensions.TypeAliasType):
+        elif typing_objects.is_typealiastype(obj):
             return str(obj)
 
         if not isinstance(obj, (typing_base, WithArgsTypes, type)):
Index: pydantic_settings-2.8.1/pyproject.toml
===================================================================
--- pydantic_settings-2.8.1.orig/pyproject.toml
+++ pydantic_settings-2.8.1/pyproject.toml
@@ -43,6 +43,7 @@ requires-python = '>=3.8'
 dependencies = [
     'pydantic>=2.7.0',
     'python-dotenv>=0.21.0',
+    'typing-inspection>=0.4.0',
 ]
 dynamic = ['version']