diff --git a/tests/test_union_body_discriminator.py b/tests/test_union_body_discriminator.py
index 39db98467..6af9e1d22 100644
--- a/tests/test_union_body_discriminator.py
+++ b/tests/test_union_body_discriminator.py
@@ -1,5 +1,6 @@
 from typing import Any, Dict, Union
 
+from dirty_equals import IsDict
 from fastapi import FastAPI
 from fastapi.testclient import TestClient
 from inline_snapshot import snapshot
@@ -92,11 +93,21 @@ def test_discriminator_pydantic_v2() -> None:
                                 "description": "Successful Response",
                                 "content": {
                                     "application/json": {
-                                        "schema": {
-                                            "type": "object",
-                                            "additionalProperties": True,
-                                            "title": "Response Save Union Body Discriminator Items  Post",
-                                        }
+                                        "schema": IsDict(
+                                            {
+                                                # Pydantic 2.10, in Python 3.8
+                                                # TODO: remove when dropping support for Python 3.8
+                                                "type": "object",
+                                                "title": "Response Save Union Body Discriminator Items  Post",
+                                            }
+                                        )
+                                        | IsDict(
+                                            {
+                                                "type": "object",
+                                                "additionalProperties": True,
+                                                "title": "Response Save Union Body Discriminator Items  Post",
+                                            }
+                                        )
                                     }
                                 },
                             },