diff --git a/update.sh b/update.sh
index 31387d1..0f986ee 100644
--- a/update.sh
+++ b/update.sh
@@ -33,7 +33,7 @@ if [ ${OS} == "Debian" ] || [ ${OS} == "Ubuntu" ]; then
     apt update; apt upgrade -y
     
     # install the packages on all systems
-    apt install -y apt-transport-https wget tar gnupg2 sudo dnsutils rsync nano htop nload iperf iperf3 unattended-upgrades unzip git nfs-common uptimed net-tools build-essential curl realmd oddjob oddjob-mkhomedir sssd sssd-tools libnss-sss libpam-sss adcli
+    apt install -y ufw apt-transport-https wget tar gnupg2 sudo dnsutils rsync nano htop nload iperf iperf3 unattended-upgrades unzip git nfs-common uptimed net-tools build-essential curl realmd oddjob oddjob-mkhomedir sssd sssd-tools libnss-sss libpam-sss adcli
     
     # enable unattended-upgrades
     echo unattended-upgrades unattended-upgrades/enable_auto_updates boolean true | debconf-set-selections