diff --git a/de/heat-templates/scripts/instance_boot.sh b/de/heat-templates/scripts/instance_boot.sh
index d991223..5397f1e 100644
--- a/de/heat-templates/scripts/instance_boot.sh
+++ b/de/heat-templates/scripts/instance_boot.sh
@@ -141,7 +141,7 @@
 function install_required_packages {
     # Disable unattended upgrades
     sed -i 's/1/0/' /etc/apt/apt.conf.d/20auto-upgrades
-    local pkg_list="apt-transport-https ca-certificates curl software-properties-common jq unzip atop iptables-persistent socat ntp"
+    local pkg_list="apt-transport-https ca-certificates curl software-properties-common jq unzip atop iptables-persistent socat ntp rng-tools"
 
     if [[ "${CONFIGURE_HUGE_PAGES}" == true ]]; then
         pkg_list="$pkg_list dpdk-igb-uio-dkms"