diff --git a/docker-compose.yml b/docker-compose.yml
index a591e50..61e9631 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,4 +1,4 @@
-version: '3'
+version: '3.9'
 services:
   cdn-app-insider:
     container_name: cdn-app-insider