diff --git a/README.md b/README.md
index 6da8751..af045ef 100644
--- a/README.md
+++ b/README.md
@@ -40,10 +40,11 @@ On your koji hub server (as root):
 
 There are optional parameters available on the install-koji-farm.sh script
 
-    install-koji-farm.sh [web=<web server FQDN> | build=<build server FQDN> | debug]
+    install-koji-farm.sh [web=<web server FQDN> | build=<build server FQDN> | scm=<IP or Name of SCM>:/* | debug]
 
 * No parameters will deploy an all-in-one server with the web and builder installed on the hub.
 * You can have multiple build=\<builder FQDN\> parameters.
+* You can have multiple scm= parameters which will be added to the allowed SCMS
 * debug will print each command executed and be very noisy (still noisy without)
 
 The web interface will be available at http://\<web FQDN\>/koji