diff --git a/opennebula-images/debian-build-opennebula-image.sh b/opennebula-images/debian-build-opennebula-image.sh
index 5c6c4f7..dd7d7bf 100755
--- a/opennebula-images/debian-build-opennebula-image.sh
+++ b/opennebula-images/debian-build-opennebula-image.sh
@@ -9,7 +9,7 @@ set -e
 set -x
 
 # XXX: Handle command-line arguments?
-RELEASE=bulleyes # 11.X
+RELEASE=bookworm # 12.X
 ARCH=amd64
 IMAGE_PATH=debian-$RELEASE-$(date --iso-8601).img.qcow2
 IMAGE_SIZE=10G
@@ -17,7 +17,7 @@ NBD_DEVICE=/dev/nbd0
 HOSTNAME=debian
 
 # TODO: find the package definition and built ourself, publish in some RPM repository.
-ONE_CONTEXT_DEB_URL="https://github.com/OpenNebula/addon-context-linux/releases/download/v5.10.0/one-context_5.10.0-1.deb"
+ONE_CONTEXT_DEB_URL="https://github.com/OpenNebula/addon-context-linux/releases/download/v6.6.1/one-context_6.6.1-1.deb"
 ONE_CONTEXT_DEB_PATH=/root/one-context.deb
 
 cleanup() {
@@ -124,7 +124,7 @@ run_root apt-get -y install "$ONE_CONTEXT_DEB_PATH"
 run_root rm "$ONE_CONTEXT_DEB_PATH"
 
 # Manually install legacy network scripts used by one-context.
-run_root apt-get -y install ifupdown
+run_root apt-get -y install ifupdown systemd-timesyncd.service
 
 # Initalize base services.
 run_root systemd-machine-id-setup