diff --git a/README.md b/README.md
index 5eaf9c2..1ab6f0b 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ The utilities for the jeb server
 You can install the library using `pip`:
 
 ```bash
-pip install jeb-server-utils --index-url https://repo.jcloud-services.ddns.net/simple/
+pip install jeb-server-utils --index-url https://repo.jcloud-services.ddns.net/simple/ --extra-index-url https://pypi.org/simple
 ```
 
 ## Usage