diff --git a/README.md b/README.md
index 6387cf5..7bf8353 100644
--- a/README.md
+++ b/README.md
@@ -20,5 +20,6 @@ Usage:
  ```
 
 # Other useful tips
+* test the script by using `--dry-run` argument with the script
 * you can change the mail command from `-b ${siteadmin} -- ${usermail}` to `-- ${siteadmin}` and comment out all lines with `bin/console user delete` statement for testing runs