diff --git a/docker-compose.yml b/docker-compose.yml
index cb7e746..df58a61 100755
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,4 +1,4 @@
-version: '3.3'
+version: '2.4'
 services:
     hblink3:
         container_name: hblink