diff --git a/docs_src/custom_response/tutorial009c.py b/docs_src/custom_response/tutorial009c.py
index 337f0cd20..6ac4e2ab7 100644
--- a/docs_src/custom_response/tutorial009c.py
+++ b/docs_src/custom_response/tutorial009c.py
@@ -10,6 +10,7 @@ class CustomORJSONResponse(Response):
 
     def render(self, content: Any) -> bytes:
         import orjson
+
         assert orjson is not None, "orjson must be installed"
         return orjson.dumps(content, option=orjson.OPT_INDENT_2)
 
diff --git a/tests/test_default_response_class.py b/tests/test_default_response_class.py
index bd37e13e0..821a71373 100644
--- a/tests/test_default_response_class.py
+++ b/tests/test_default_response_class.py
@@ -1,7 +1,6 @@
 from typing import Any
 
 import pytest
-
 from fastapi import APIRouter, FastAPI
 from fastapi.responses import HTMLResponse, JSONResponse, PlainTextResponse
 from fastapi.testclient import TestClient
@@ -12,6 +11,7 @@ class ORJSONResponse(JSONResponse):
 
     def render(self, content: Any) -> bytes:
         import orjson
+
         return orjson.dumps(content)