diff --git a/os/layers/live/hooks/live/2005-live.hook.chroot b/os/layers/live/hooks/live/2005-live.hook.chroot
index 7398a8d..77fca84 100644
--- a/os/layers/live/hooks/live/2005-live.hook.chroot
+++ b/os/layers/live/hooks/live/2005-live.hook.chroot
@@ -4,3 +4,7 @@ set -eu
 
 # Enable the live system configuration script at boot.
 systemctl enable live-config.service
+
+# Disable automatic apt update.
+systemctl disable apt-daily.timer
+systemctl disable apt-daily-upgrade.timer