diff --git a/scripts/os_debian b/scripts/os_debian
index 7908436..53b21d6 100755
--- a/scripts/os_debian
+++ b/scripts/os_debian
@@ -2,9 +2,15 @@
 
 restoreDir="/etc/restore"
 
+function is_bin_in_path {
+    builtin type -P "$1" &>/dev/null
+}
 
 hook_check() {
-    :
+    if ! is_bin_in_path aptitude; then
+      echo "aptitude needs to be installed for backups to work properly."
+      exit 1
+    fi
 }
 
 hook_pre() {
@@ -14,7 +20,9 @@ hook_pre() {
     dpkg --get-selections > Package.list
     aptitude search --disable-columns -F%p '~i!~M!~v' > InstallOnly.list
     #apt-key exportall > /etc/restore/Repo.keys
-    rsync -avhHi /etc/apt/trusted.gpg.d /etc/restore/
+    cp -a /etc/apt/sources.list "$restoreDir/"
+    rsync -avhHi /etc/apt/sources.list.d "$restoreDir/"
+    rsync -avhHi /etc/apt/trusted.gpg.d "$restoreDir/"
 
     cat > restore.sh <<EOF
 #!/bin/bash
@@ -43,6 +51,7 @@ if [[ -n "\$install" ]]; then
     apt -y install \$install
 fi
 
+rsync --ignore-existing -raz sources.list.d/ /etc/apt/sources.list.d/
 rsync --ignore-existing -raz trusted.gpg.d/ /etc/apt/trusted.gpg.d/
 xargs aptitude --schedule-only install < InstallOnly.list
 aptitude install