diff --git a/Tutorial/sources.list b/Tutorial/sources.list
index f9997d6..febc75e 100644
--- a/Tutorial/sources.list
+++ b/Tutorial/sources.list
@@ -4,6 +4,8 @@ deb http://deb.debian.org/debian/ bookworm main non-free-firmware non-free contr
 
 deb http://security.debian.org/ bookworm-security bookworm-security main non-free-firmware non-free contrib
 
+deb http://deb.debian.org/debian bookworm-backports main contrib non-free-firmware
+
 deb [trusted=yes] http://packages.linuxmint.com faye main upstream import backport
 
 deb http://www.deb-multimedia.org testing main non-free