<?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">
<host id="Cpu A" speed="10f" availability_file="trace/trace_A.txt" state_file="trace/trace_A_failure.txt"/>