diff --git a/setup.sh b/setup.sh
index 5f1803d..61b1f63 100644
--- a/setup.sh
+++ b/setup.sh
@@ -599,6 +599,7 @@ run_cmd "sudo apt install -y \
   ufw \
   ndisc6 \
   fail2ban \
+  whois \
   socat \
   python3-pip \
   micro \