diff --git a/pica-mattermost/docker-compose.yml b/pica-mattermost/docker-compose.yml
index 13648cb9dd92d5f3d21112e88f1a33a9225cc829..a95e64bf7ff987ef44d1f9b94465ddb31ed4868a 100644
--- a/pica-mattermost/docker-compose.yml
+++ b/pica-mattermost/docker-compose.yml
@@ -58,6 +58,8 @@ services:
     volumes:
       - /etc/localtime:/etc/localtime:ro
     env_file: ./secrets/mattermost-exporter.secrets
+    networks:
+      - mattermost
     labels:
       traefik.http.routers.mattermost-metrics.entrypoints: websecure
       traefik.http.routers.mattermost-metrics.rule: "Host(`team.picasoft.net`) && PathPrefix(`/metrics`)"