<?xml version='1.0'?>
-<!DOCTYPE platform SYSTEM "http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd">
+<!DOCTYPE platform SYSTEM "https://simgrid.org/simgrid.dtd">
<platform version="4.1">
<zone id="AS0" routing="Full">
<cluster id="my_cluster_1" prefix="c-" suffix=".me" radical="0-1" speed="1Gf" bw="125MBps" lat="50us"