.circleci/config.yml in standard-0.2.3 vs .circleci/config.yml in standard-0.2.4

@@ -4,11 +4,11 @@
 #
 version: 2
 jobs:
   build:
     docker:
-       - image: circleci/ruby:2.4.1-node-browsers
+       - image: circleci/ruby:2.7.0-node-browsers
     working_directory: ~/repo
 
     steps:
       - checkout
       - restore_cache:
@@ -17,9 +17,10 @@
           - v1-dependencies-
 
       - run:
           name: install dependencies
           command: |
+            bundle update --bundler
             bundle install --jobs=4 --retry=3 --path vendor/bundle
 
       - save_cache:
           paths:
             - ./vendor/bundle