diff --git a/wireguard-install.sh b/wireguard-install.sh
index 40c08ce..7c59544 100644
--- a/wireguard-install.sh
+++ b/wireguard-install.sh
@@ -12,10 +12,12 @@ function addClient() {
 		ENDPOINT="$SERVER_PUB_IP:$SERVER_PORT"
 	fi
 
-	CLIENT_WG_IPV4="10.66.66.2"
+	# count peers and increment the suggested client IP
+	peersCount=$(grep -c 'Peer' /etc/wireguard/"$SERVER_WG_NIC".conf)
+	CLIENT_WG_IPV4="10.66.66.$((peersCount+2))"
 	read -rp "Client's WireGuard IPv4 " -e -i "$CLIENT_WG_IPV4" CLIENT_WG_IPV4
 
-	CLIENT_WG_IPV6="fd42:42:42::2"
+	CLIENT_WG_IPV6="fd42:42:42::$((peersCount+2))"
 	read -rp "Client's WireGuard IPv6 " -e -i "$CLIENT_WG_IPV6" CLIENT_WG_IPV6
 
 	# Adguard DNS by default