diff --git a/TODO.txt b/TODO.txt
index 201810a..59b71aa 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -10,3 +10,4 @@ Things to do in no particular order:
 - Add more services
 - Add more tasks e.g. storage in mongodb or mariadb and some more notifications like XMPP and SMS
 - Check for all required configuration options and set defaults in services.
+- Write documentation and inline documentation.