diff --git a/polybar-scripts/mail-imap/README.md b/polybar-scripts/mail-imap/README.md
index 25112ad..80d0ccb 100644
--- a/polybar-scripts/mail-imap/README.md
+++ b/polybar-scripts/mail-imap/README.md
@@ -2,6 +2,8 @@
 
 A script that shows if there are unread mails in your IMAP inbox.
 
+For Gmail, you must allow [less secure apps](https://myaccount.google.com/security#connectedapps).
+
 
 ## Module