diff --git a/build/docker-extension/docker-compose.yml b/build/docker-extension/docker-compose.yml
index 7845c4be4..11e380786 100644
--- a/build/docker-extension/docker-compose.yml
+++ b/build/docker-extension/docker-compose.yml
@@ -1,4 +1,3 @@
-version: '3'
 
 services:
   portainer: