diff --git a/Sources/SIS/docker-compose.yml b/Sources/SIS/docker-compose.yml
index c0939d2..2ff4e15 100644
--- a/Sources/SIS/docker-compose.yml
+++ b/Sources/SIS/docker-compose.yml
@@ -1,3 +1,5 @@
+version: '2'
+
 services:
   sis-db:
     image: mysql:5.6