diff --git a/config/hooks/live/0000_basic_chroot_setup.chroot b/config/hooks/live/0000_basic_chroot_setup.chroot
index b749211..5e6d457 100644
--- a/config/hooks/live/0000_basic_chroot_setup.chroot
+++ b/config/hooks/live/0000_basic_chroot_setup.chroot
@@ -213,6 +213,11 @@ chmod 0700 /root/.ciss/dlb/{backup,log}
 mkdir -p /root/git
 chmod 0700 /root/git
 
+### Mask apt show version unit and timer.
+ln -sf /dev/null /etc/systemd/system/apt-show-versions.timer
+ln -sf /dev/null /etc/systemd/system/apt-show-versions.service
+rm -f /etc/cron.daily/apt-show-versions || true
+
 printf "\e[92m++++ ++++ ++++ ++++ ++++ ++++ ++ ✅ '%s' applied successfully. \e[0m\n" "${0}"
 
 exit 0
diff --git a/scripts/usr/local/sbin/9999-cdi-starter b/scripts/usr/local/sbin/9999-cdi-starter
index 4d6f34b..29345a6 100644
--- a/scripts/usr/local/sbin/9999-cdi-starter
+++ b/scripts/usr/local/sbin/9999-cdi-starter
@@ -140,6 +140,9 @@ main() {
   net_wait
   printf "Command: [net_wait] executed.\n" >> "${var_log}"
 
+  ### apt update.
+  apt-get update >> "${var_log}"
+
   ### Download CISS.debian.installer.
   cd /root/git
   [[ -d "${var_repo_dir}" ]] && rm -rf "${var_repo_dir}"