diff --git a/fastapi/_compat.py b/fastapi/_compat.py
index 9934288be..f7d91c06a 100644
--- a/fastapi/_compat.py
+++ b/fastapi/_compat.py
@@ -110,7 +110,7 @@ if PYDANTIC_V2:
         def __post_init__(self) -> None:
             self._type_adapter: TypeAdapter[Any] = TypeAdapter(
                 Annotated[self.field_info.annotation, self.field_info],
-                config=self.model_config,
+                config=self.model_config,  # type: ignore[arg-type]
             )
 
         def get_default(self) -> Any:
@@ -285,7 +285,9 @@ if PYDANTIC_V2:
     def get_model_fields(model: Type[BaseModel]) -> List[ModelField]:
         return [
             ModelField(
-                field_info=field_info, name=name, model_config=model.model_config
+                field_info=field_info,
+                name=name,
+                model_config=model.model_config,  # type: ignore[arg-type]
             )
             for name, field_info in model.model_fields.items()
         ]
diff --git a/fastapi/utils.py b/fastapi/utils.py
index 4c7350fea..ef818782b 100644
--- a/fastapi/utils.py
+++ b/fastapi/utils.py
@@ -138,7 +138,7 @@ def create_cloned_field(
     new_field.class_validators = field.class_validators  # type: ignore[attr-defined]
     new_field.default = field.default  # type: ignore[misc]
     new_field.required = field.required  # type: ignore[misc]
-    new_field.model_config = field.model_config  # type: ignore[attr-defined]
+    new_field.model_config = field.model_config
     new_field.field_info = field.field_info
     new_field.allow_none = field.allow_none  # type: ignore[attr-defined]
     new_field.validate_always = field.validate_always  # type: ignore[attr-defined]