deb-src  http://ftp.de.debian.org./debian             trixie                  main contrib non-free
deb-src  http://ftp.de.debian.org./debian             trixie-updates          main contrib non-free
deb-src  http://ftp.de.debian.org./debian             trixie-proposed-updates main contrib non-free
deb-src  http://security.debian.org./debian-security  trixie-security         main contrib non-free
deb-src  http://ftp.de.debian.org./debian             trixie-backports        main contrib non-free