diff --git a/pica-mattermost/docker-compose.yml b/pica-mattermost/docker-compose.yml
index 2cc8287301d94cd195f4d5a2e8afd0def6a9f652..5f66f8f384daa7649f44274765c76eb8ee687de4 100644
--- a/pica-mattermost/docker-compose.yml
+++ b/pica-mattermost/docker-compose.yml
@@ -17,6 +17,7 @@ volumes:
 services:
   mattermost:
     image: registry.picasoft.net/pica-mattermost:5.23.0
+    build: .
     container_name: mattermost-app
     links:
       - mattermost-db:mattermost-db