diff --git a/README.md b/README.md
index e9fabd6..a722f3a 100644
--- a/README.md
+++ b/README.md
@@ -61,5 +61,15 @@ The integration will be discussed on the Pull Request.
 
 **Important**: You will have to find a maintainer willing to take care of the package while published if you want your app to be validated.
 
-#### More information on [yunohost.org/packaging_apps](https://yunohost.org/packaging_apps)
+#### Helper script
 
+You can use the <code>add_or_update.py</code> python script to add or update
+your app from one of the 2 json files.
+
+Usage:
+
+```bash
+python ./add_or_update.py [community.json OR official.json] [github url [github url [github url ...]]]
+```
+
+#### More information on [yunohost.org/packaging_apps](https://yunohost.org/packaging_apps)