diff --git a/docker-compose-cluster.yml b/docker-compose-cluster.yml
index bc30ae68b..86defaf50 100644
--- a/docker-compose-cluster.yml
+++ b/docker-compose-cluster.yml
@@ -1,5 +1,3 @@
-version: '3.8'
-
 services:
   # Load Balancer (NGINX) with WebSocket support and session persistence
   load-balancer: