diff --git a/service-by-telegram.sh b/service-by-telegram.sh
index 94af6e7..8ca4c63 100755
--- a/service-by-telegram.sh
+++ b/service-by-telegram.sh
@@ -2,7 +2,7 @@
 ## /etc/icinga2/scripts/service-by-telegram.sh / 20170330
 ## Marianne M. Spiller <github@spiller.me>
 ## Last updated 20190820
-## Last tests used icinga2-2.10.5-1.stretch 
+## Last tests used icinga2-2.11.2-1.buster
 
 PROG="`basename $0`"
 HOSTNAME="`hostname`"