diff --git a/nomad/chat.hcl b/nomad/chat.hcl
index 816da64..31a75a5 100644
--- a/nomad/chat.hcl
+++ b/nomad/chat.hcl
@@ -110,6 +110,7 @@ job "chat" {
           "traefik.enable=true",
           "traefik.frontend.entryPoints=https",
           "traefik.frontend.rule=Host:im.deuxfleurs.fr;PathPrefix:/_matrix",
+          "traefik.frontend.headers.customResponseHeaders=Access-Control-Allow-Origin: *",
           "traefik.frontend.priority=100"
         ]
         check {