diff --git a/.circleci/config.yml b/.circleci/config.yml
index 47a6693..8c3cbae 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -8,7 +8,7 @@ jobs:
     docker:
     # specify the version you desire here
     - image: circleci/openjdk:8-jdk
-    - image: mongo:3.6.8
+    - image: mongo
 
     # Specify service dependencies here if necessary
     # CircleCI maintains a library of pre-built images