diff --git a/docker-compose.yml b/docker-compose.yml
index 85f334b8ec..fbbd2f0fa8 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -25,7 +25,7 @@ services:
       - mongo
 
   mongo:
-    image: mongo
+    image: mongo:3.4
     ports:
       - "27017:27017"
     networks: