diff --git a/whisperx/transcribe.py b/whisperx/transcribe.py
index 3bb1a36..1855178 100644
--- a/whisperx/transcribe.py
+++ b/whisperx/transcribe.py
@@ -26,7 +26,7 @@ def cli():
     parser.add_argument("--compute_type", default="float16", type=str, choices=["float16", "float32", "int8"], help="compute type for computation")
 
     parser.add_argument("--output_dir", "-o", type=str, default=".", help="directory to save the outputs")
-    parser.add_argument("--output_format", "-f", type=str, default="all", choices=["all", "srt", "vtt", "txt", "tsv", "json"], help="format of the output file; if not specified, all available formats will be produced")
+    parser.add_argument("--output_format", "-f", type=str, default="all", choices=["all", "srt", "vtt", "txt", "tsv", "json", "aud"], help="format of the output file; if not specified, all available formats will be produced")
     parser.add_argument("--verbose", type=str2bool, default=True, help="whether to print out the progress and debug messages")
 
     parser.add_argument("--task", type=str, default="transcribe", choices=["transcribe", "translate"], help="whether to perform X->X speech recognition ('transcribe') or X->English translation ('translate')")
@@ -210,4 +210,4 @@ def cli():
         writer(result, audio_path, writer_args)
 
 if __name__ == "__main__":
-    cli()
\ No newline at end of file
+    cli()