diff --git a/whisperx/utils.py b/whisperx/utils.py
index 37792d3..7c837a8 100644
--- a/whisperx/utils.py
+++ b/whisperx/utils.py
@@ -402,7 +402,7 @@ class WriteJSON(ResultWriter):
     extension: str = "json"
 
     def write_result(self, result: dict, file: TextIO, options: dict):
-        json.dump(result, file)
+        json.dump(result, file, ensure_ascii=False)
 
 
 def get_writer(