diff --git a/README.md b/README.md
index c13acbd..916d5c6 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@
 - [] add `always_show` to `planned_trips` (e.g. for wanderfahrten)
 - [] exactly same time -> deny registration
 - [] `planned_events` -> ICS feed to be [integrated](https://icscalendar.com/shortcode-overview/) in homepage calendar
+- [] Guests should only be allowed to register at certain trips
 
 # Nice to have
 - [] automatically add regular planned trip