diff --git a/Chapter 3 Files/deploy.sh b/Chapter 3 Files/deploy.sh
index e3f6cd6..dfaeed4 100644
--- a/Chapter 3 Files/deploy.sh	
+++ b/Chapter 3 Files/deploy.sh	
@@ -237,6 +237,8 @@ sed -i "s/800/$DISK_80/g" docker-compose-stack-live.yml
 }
 
 function installdocker(){
+echo "install curl to get the docker convenience script"
+apt install unattended-upgrades -y
 echo "install docker"
 curl -fsSL https://get.docker.com -o get-docker.sh
 sh get-docker.sh
@@ -329,6 +331,8 @@ docker exec -it $(docker ps -q --filter="NAME=lme_elasticsearch") bash -c /elast
 
 function install(){
 
+#install net-tools to allow backwards compatibility
+sudo apt install net-tools -y
 #move configs
 cp docker-compose-stack.yml docker-compose-stack-live.yml
 
diff --git a/docs/prerequisites.md b/docs/prerequisites.md
index bb00177..74b0d74 100644
--- a/docs/prerequisites.md
+++ b/docs/prerequisites.md
@@ -62,6 +62,7 @@ To begin your Logging Made Easy installation, you will need access to (or creati
    * If budget allows, we recommend having a dedicated server for WEC. If this is not possible, WEC can be setup on an existing server but consider the performance impacts.
    * The WEC server could be Windows Server 2016 (or later) or Windows 8.1 client (or later) 
 * A Linux server with 2 processor cores and 16GB RAM. We will install our database (Elasticsearch) and dashboard software on this machine. This is all taken care of through Docker containers. **DO NOT install Docker from Ubuntu installation wizard ('Snaps'), we install the Docker community edition later.**
+   * The deploy script has only been tested on Ubuntu 18.04 Long Term Support (LTS).
 
 ## Where to install the servers