diff --git a/client_install_programme.sh b/client_install_programme.sh
index d2979cd..c5e9338 100644
--- a/client_install_programme.sh
+++ b/client_install_programme.sh
@@ -7,14 +7,14 @@ NC='\033[0m' # Keine Farbe
 
 # Datei und neuer Inhalt definieren
 SOURCES_FILE="/etc/apt/sources.list"
-NEW_CONTENT="deb http://deb.debian.org/debian bullseye main contrib non-free
-deb-src http://deb.debian.org/debian bullseye main contrib non-free
+NEW_CONTENT="deb http://deb.debian.org/debian bookworm main contrib non-free
+deb-src http://deb.debian.org/debian bookworm main contrib non-free
 
-deb http://deb.debian.org/debian-security/ bullseye-security main contrib non-free
-deb-src http://deb.debian.org/debian-security/ bullseye-security main contrib non-free
+deb http://deb.debian.org/debian-security/ bookworm-security main contrib non-free
+deb-src http://deb.debian.org/debian-security/  bookworm ecurity main contrib non-free
 
-deb http://deb.debian.org/debian bullseye-updates main contrib non-free
-deb-src http://deb.debian.org/debian bullseye-updates main contrib non-free
+deb http://deb.debian.org/debian  bookworm-updates main contrib non-free
+deb-src http://deb.debian.org/debian  bookworm-updates main contrib non-free
 
 deb http://www.ecodms.de/ecodms_240264/bookworm /