diff --git a/docker-compose.yml b/docker-compose.yml
index 73e9966..904aee3 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,4 +1,3 @@
-version: '3'
 services:
     cortex:
         image: vertexproject/synapse-cortex:v2.x.x