diff --git a/.circleci/config.yml b/.circleci/config.yml
index 7eb8097b..1228593b 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -13,7 +13,7 @@ jobs:
         type: string
       bundler_version:
         type: string
-        default: 2.1.4
+        default: 2.4.3
     executor:
       name: 'samvera/ruby'
       ruby_version: << parameters.ruby_version >>