diff --git a/README.md b/README.md
index 25fefd0..2e52f94 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,7 @@ poetry run whisper_streaming --language ja --model base -n 20
 ```
 
 - ``-n`` sets interval of parsing. Larger values can improve accuracy but consume more memory.
+- ``--debug`` outputs logs for debug
 
 ## Tips