diff --git a/README.md b/README.md
index 9217d740..16560c60 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,7 @@ TLS Options:
 
 Cluster Options:
         --routes [rurl-1, rurl-2]    Routes to solicit and connect
+        --cluster [cluster url]      Cluster URL for solicited routes
 
 Common Options:
     -h, --help                       Show this message