diff --git a/pica-mattermost/docker-compose.yml b/pica-mattermost/docker-compose.yml
index a95e64bf7ff987ef44d1f9b94465ddb31ed4868a..e542e876ce56952d2ffd60d056aa977ab5ba85c6 100644
--- a/pica-mattermost/docker-compose.yml
+++ b/pica-mattermost/docker-compose.yml
@@ -60,6 +60,7 @@ services:
     env_file: ./secrets/mattermost-exporter.secrets
     networks:
       - mattermost
+      - proxy
     labels:
       traefik.http.routers.mattermost-metrics.entrypoints: websecure
       traefik.http.routers.mattermost-metrics.rule: "Host(`team.picasoft.net`) && PathPrefix(`/metrics`)"