diff --git a/Journal/2023-01-21.md b/Journal/2023-01-21.md
index ab093d00..df4559dc 100644
--- a/Journal/2023-01-21.md
+++ b/Journal/2023-01-21.md
@@ -26,6 +26,7 @@
 	- Tutorials
 		- https://www.verdrahtet.info/2021/05/15/ebus-logger-heizungsdaten-direkt-auslesen/
 		- https://fromeijn.nl/connected-vaillant-to-home-assistant/
+		- https://wiki.fhem.de/wiki/EBUS
 	- Hardware
 		- https://ebusd.eu/myadapter/
 		- Mit Wifi Adapter bestellt [[2023-01-10]]