diff --git a/docs/USAGE.md b/docs/USAGE.md
index ff051a83..0f082d0a 100644
--- a/docs/USAGE.md
+++ b/docs/USAGE.md
@@ -65,6 +65,7 @@ Download the checkpoint from [here](https://myshell-public-repo-host.s3.amazonaw
 Install [MeloTTS](/~https://github.com/myshell-ai/MeloTTS):
 ```
 pip install git+/~https://github.com/myshell-ai/MeloTTS.git
+pip install -e .
 python -m unidic download
 ```