.circleci/config.yml in uniqable-0.3.3 vs .circleci/config.yml in uniqable-0.3.4

@@ -5,10 +5,10 @@
 version: 2
 jobs:
   build:
     docker:
       # specify the version you desire here
-       - image: circleci/ruby:2.3-node-browsers
+       - image: circleci/ruby:2.4-node-browsers
 
       # Specify service dependencies here if necessary
       # CircleCI maintains a library of pre-built images
       # documented at https://circleci.com/docs/2.0/circleci-images/
       # - image: circleci/postgres:9.4