diff --git a/docker-compose.yml b/docker-compose.yml
index bb165d8..2ff4155 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,4 +1,4 @@
-version: '3.4'
+version: '3'
 services:
   ledserver-controller-html:
     build: clients/controller-html