diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 18b6a8b..642e98a 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,6 +2,12 @@ Changelog
 =========
 
 
+2.1.1 (2025-11-08)
+-------------------
+
+- fix: pydantic specification extractor fixed.
+
+
 2.1.0 (2025-10-31)
 -------------------
 
diff --git a/pjrpc/server/specs/extractors/pydantic.py b/pjrpc/server/specs/extractors/pydantic.py
index 9710cb1..5933eb8 100644
--- a/pjrpc/server/specs/extractors/pydantic.py
+++ b/pjrpc/server/specs/extractors/pydantic.py
@@ -151,7 +151,7 @@ def extract_response_schema(
                     title=error.__name__,
                     json_schema_extra=dict(description=f'**{error.CODE}** {error.MESSAGE}'),
                 ),
-            ) for error in errors or []
+            ) for error in sorted(errors or [], key=lambda err: (err.CODE < 0, abs(err.CODE)))
         )
 
         response_model = pd.create_model(
@@ -186,7 +186,7 @@ def extract_error_response_schema(
                     title=error.__name__,
                     json_schema_extra=dict(description=f'**{error.CODE}** {error.MESSAGE}'),
                 ),
-            ) for error in errors or []
+            ) for error in sorted(errors or [], key=lambda err: (err.CODE < 0, abs(err.CODE)))
         )
 
         response_model = pd.create_model(
diff --git a/pjrpc/server/specs/extractors/pydantic_v1.py b/pjrpc/server/specs/extractors/pydantic_v1.py
index dec3cee..4eaa7ac 100644
--- a/pjrpc/server/specs/extractors/pydantic_v1.py
+++ b/pjrpc/server/specs/extractors/pydantic_v1.py
@@ -136,13 +136,13 @@ def extract_response_schema(
         return_model = self._build_result_model(method_name, method)
 
         error_models: list[type[pd.BaseModel]] = []
-        for error in errors or []:
+        for error in sorted(errors or [], key=lambda err: (err.CODE < 0, abs(err.CODE))):
             class ErrorModel(pydantic.BaseModel):
                 Config = pydantic.config.get_config(
                     dict(
                         self._config_args,
                         title=error.__name__,
-                        json_schema_extra=dict(description=f'**{error.CODE}** {error.MESSAGE}'),
+                        schema_extra=dict(description=f'**{error.CODE}** {error.MESSAGE}'),
                     ),
                 )
                 __root__: JsonRpcResponseError[JsonRpcError[Literal[error.CODE], Any]]  # type: ignore[name-defined]
@@ -171,13 +171,13 @@ def extract_error_response_schema(
             errors: Optional[Iterable[type[exceptions.TypedError]]] = None,
     ) -> tuple[dict[str, Any], dict[str, dict[str, Any]]]:
         error_models: list[type[pd.BaseModel]] = []
-        for error in errors or []:
+        for error in sorted(errors or [], key=lambda err: (err.CODE < 0, abs(err.CODE))):
             class ErrorModel(pydantic.BaseModel):
                 Config = pydantic.config.get_config(
                     dict(
                         self._config_args,
                         title=error.__name__,
-                        json_schema_extra=dict(description=f'**{error.CODE}** {error.MESSAGE}'),
+                        schema_extra=dict(description=f'**{error.CODE}** {error.MESSAGE}'),
                     ),
                 )
                 __root__: JsonRpcResponseError[JsonRpcError[Literal[error.CODE], Any]]  # type: ignore[name-defined]
diff --git a/pyproject.toml b/pyproject.toml
index 6ed0c23..b3efc3b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "pjrpc"
-version = "2.1.0"
+version = "2.1.1"
 description = "Extensible JSON-RPC library"
 authors = ["Dmitry Pershin <dapper1291@gmail.com>"]
 license = "Unlicense"
diff --git a/tests/server/test_openapi.py b/tests/server/test_openapi.py
index 14af2af..97e2e82 100644
--- a/tests/server/test_openapi.py
+++ b/tests/server/test_openapi.py
@@ -1876,13 +1876,13 @@ def test_method():
                             },
                         ),
                         '500': response_schema(
-                            description='* **-32603** Internal error\n* **-32000** Server error',
+                            description='* **-32000** Server error\n* **-32603** Internal error',
                             schema={
                                 'title': 'TestMethodResponse',
-                                'description': '* **-32603** Internal error\n* **-32000** Server error',
+                                'description': '* **-32000** Server error\n* **-32603** Internal error',
                                 'anyOf': [
-                                    {'$ref': '#/components/schemas/test_openapi_InternalError'},
                                     {'$ref': '#/components/schemas/test_openapi_ServerError'},
+                                    {'$ref': '#/components/schemas/test_openapi_InternalError'},
                                 ],
                             },
                         ),