diff --git a/README.md b/README.md
index 1dd2992..d4174aa 100644
--- a/README.md
+++ b/README.md
@@ -7,3 +7,5 @@ A simple node script to update a duckdns dynamicdns domain and relavent dns reco
 `npm i` in the directory in a terminal to initalize the project, upon first running with node it will exit it's self having generated a config - fill out this config and then run it again, it will do the rest for you. run with CLI args `-v` or `--verbose` to log server responses and other information.
 
 Keep the delay interval to `120000`ms for best results.
+
+Leave ip blank for the ip to always update as the current ip the script is running on.