diff --git a/Installing-on-Debian-Linux.md b/Installing-on-Debian-Linux.md
index fecb2fb..9005957 100644
--- a/Installing-on-Debian-Linux.md
+++ b/Installing-on-Debian-Linux.md
@@ -28,7 +28,10 @@ pipx run radicale --logging-level info --storage-filesystem-folder=~/.var/lib/ra
 
 ## Debian 12 "sytemwide"
 
-ATTENTION: as of 2025-01-31 only version 3.1.8 is available
+See also
+* https://packages.debian.org/radicale
+
+ATTENTION: as of 2025-01-31 only version 3.1.8 is available for "bookworm"
 
 ### Installation