diff --git a/.circleci/config.yml b/.circleci/config.yml
index 259f4e86..38736730 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -5,7 +5,7 @@ jobs:
     working_directory: ~/pomegranate
     docker:
       # The primary container is an instance of the first list image listed. Your build commands run in this container.
-      - image: circleci/ruby:2.3.7-node-browsers
+      - image: circleci/ruby:2.4.5-node-browsers
         environment:
           RAILS_ENV: test
           NODE_ENV: test
@@ -46,7 +46,7 @@ jobs:
   rubocop:
     working_directory: ~/pomegranate
     docker:
-      - image: circleci/ruby:2.3.7-node-browsers
+      - image: circleci/ruby:2.4.5-node-browsers
         environment:
           RAILS_ENV: test
           POMEGRANATE_DB_HOST: localhost
@@ -61,7 +61,7 @@ jobs:
   test:
     working_directory: ~/pomegranate
     docker:
-      - image: circleci/ruby:2.3.7-node-browsers
+      - image: circleci/ruby:2.4.5-node-browsers
         environment:
           RAILS_ENV: test
           POMEGRANATE_DB_HOST: localhost