diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 90bb40bff..3b2ec397c 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -6716,6 +6716,7 @@ class _UnsafeExtensionError(Exception):
 
         return extension
 
+
 def json_stringify(json_expr, **kwargs):
     # /, *, concise=True, result_encoding='utf-8', **{**encode_result_kwargs, **dumps_kwargs}
     """