diff --git a/docker-compose.yml b/docker-compose.yml
index 0d20f868..9ccd4737 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -2,7 +2,7 @@ version: '2'
 
 services:
   mdb:
-    image: mongo
+    image: mongo:3.4.1
     ports:
       - "27017"