.circleci/config.yml in intercom-3.7.6 vs .circleci/config.yml in intercom-3.7.7

@@ -1,9 +1,9 @@
 version: 2
 jobs:
   build:
     docker:
-      - image: circleci/ruby:2.3.7
+      - image: circleci/ruby:2.4.6
 
     working_directory: ~/intercom-ruby
 
     steps:
       - checkout