diff --git a/sources.list.d/debian-09-stretch-debug.list b/sources.list.d/debian-09-stretch-debug.list
index dce0990..a1435f6 100644
--- a/sources.list.d/debian-09-stretch-debug.list
+++ b/sources.list.d/debian-09-stretch-debug.list
@@ -1,2 +1,3 @@
 deb      http://debug.mirrors.debian.org/debian-debug    stretch-debug                     main contrib non-free
 deb      http://debug.mirrors.debian.org/debian-debug    stretch-proposed-updates-debug    main contrib non-free
+deb      http://debug.mirrors.debian.org/debian-debug    stretch-backports-debug           main contrib non-free
diff --git a/sources.list.d/debian-10-buster-debug.list b/sources.list.d/debian-10-buster-debug.list
index 966612d..2db28b6 100644
--- a/sources.list.d/debian-10-buster-debug.list
+++ b/sources.list.d/debian-10-buster-debug.list
@@ -1,2 +1,3 @@
 deb      http://debug.mirrors.debian.org/debian-debug    buster-debug                     main contrib non-free
 deb      http://debug.mirrors.debian.org/debian-debug    buster-proposed-updates-debug    main contrib non-free
+deb      http://debug.mirrors.debian.org/debian-debug    buster-backports-debug           main contrib non-free
diff --git a/sources.list.d/debian-11-bullseye-debug.list b/sources.list.d/debian-11-bullseye-debug.list
index 63fe5b4..b8f9414 100644
--- a/sources.list.d/debian-11-bullseye-debug.list
+++ b/sources.list.d/debian-11-bullseye-debug.list
@@ -1,2 +1,3 @@
 deb      http://debug.mirrors.debian.org/debian-debug    bullseye-debug                     main contrib non-free
 deb      http://debug.mirrors.debian.org/debian-debug    bullseye-proposed-updates-debug    main contrib non-free
+deb      http://debug.mirrors.debian.org/debian-debug    bullseye-backports-debug           main contrib non-free
diff --git a/sources.list.d/debian-12-bookworm-debug.list b/sources.list.d/debian-12-bookworm-debug.list
index 67be06d..4cdc789 100644
--- a/sources.list.d/debian-12-bookworm-debug.list
+++ b/sources.list.d/debian-12-bookworm-debug.list
@@ -1,2 +1,3 @@
 deb      http://debug.mirrors.debian.org/debian-debug    bookworm-debug                     main contrib non-free
 deb      http://debug.mirrors.debian.org/debian-debug    bookworm-proposed-updates-debug    main contrib non-free
+deb      http://debug.mirrors.debian.org/debian-debug    bookworm-backports-debug           main contrib non-free