diff --git a/README.md b/README.md
index 1291cee..f9b4406 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@
 
 _Pixiv API for Python (with Auth supported)_
 
-- [2024/03/03] _v3.7.5_ Fix `novel_text()` BUG, add `webview_novel()`, see 
+- [2024/03/03] _v3.7.5_ Fix `novel_text()` BUG, add `webview_novel()`, see
   [#337](https://github.com/upbit/pixivpy/issues/337) (thanks
   [@xiyihan](https://github.com/xiyihan0))
 - [2023/09/18] _v3.7.3_ Add `novel_follow()`, fix ByPassSniApi() host BUG, see
diff --git a/pixivpy3/aapi.py b/pixivpy3/aapi.py
index c82a4a8..a2d4d6f 100644
--- a/pixivpy3/aapi.py
+++ b/pixivpy3/aapi.py
@@ -815,7 +815,7 @@ def webview_novel(self, novel_id: int | str, raw: bool = False, req_auth: bool =
             return r.text
         try:
             # extract JSON content
-            json_str = re.search(r"novel:\s({.+}),\s+isOwnWork", r.text).groups()[0].encode() # type: ignore
+            json_str = re.search(r"novel:\s({.+}),\s+isOwnWork", r.text).groups()[0].encode()  # type: ignore
             return self.parse_json(json_str)
         except Exception as e:
             raise PixivError("Extract novel content error: %s" % e, header=r.headers, body=r.text)
diff --git a/pixivpy3/api.py b/pixivpy3/api.py
index a55cbe5..7762776 100644
--- a/pixivpy3/api.py
+++ b/pixivpy3/api.py
@@ -5,7 +5,7 @@
 import os
 import shutil
 from datetime import datetime
-from typing import IO, Any, Union
+from typing import IO, Any
 
 import cloudscraper  # type: ignore[import]
 from requests.structures import CaseInsensitiveDict
@@ -44,7 +44,7 @@ def set_accept_language(self, language: str) -> None:
         self.additional_headers["Accept-Language"] = language
 
     @classmethod
-    def parse_json(cls, json_str: Union[str, bytes, Any]) -> ParsedJson:
+    def parse_json(cls, json_str: str | bytes) -> ParsedJson:
         """parse str into JsonDict"""
         return json.loads(json_str, object_hook=JsonDict)