diff --git a/compose.yml b/compose.yml
index ec774e9..0433f72 100644
--- a/compose.yml
+++ b/compose.yml
@@ -72,6 +72,12 @@ services:
         - "traefik.http.routers.${STACK_NAME}.tls.certresolver=${LETS_ENCRYPT_ENV}"
         - "coop-cloud.${STACK_NAME}.version=4.0.2+v2.25.4"
         - "backupbot.backup:=${ENABLE_BACKUPS:-true}"
+        - "traefik.http.routers.${STACK_NAME}.middlewares=${STACK_NAME}"
+        - "traefik.http.middlewares.${STACK_NAME}.headers.accesscontrolallowmethods=GET,OPTIONS,PUT"
+        - "traefik.http.middlewares.${STACK_NAME}.headers.accesscontrolallowheaders=*"
+        - "traefik.http.middlewares.${STACK_NAME}.headers.accessControlAllowOriginList=*"
+        - "traefik.http.middlewares.${STACK_NAME}.headers.accesscontrolmaxage=100"
+        - "traefik.http.middlewares.${STACK_NAME}.headers.addvaryheader=true"
   worker:
     image: loomio/loomio:v2.25.4
     configs: