diff --git a/.circleci/config.yml b/.circleci/config.yml
index 8aca788d..22957a7c 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -24,9 +24,9 @@ workflows:
         matrix:
           parameters:
             ruby_image:
-            - cimg/ruby:2.5
             - cimg/ruby:2.6
             - cimg/ruby:2.7
             - cimg/ruby:3.0
+            - cimg/ruby:3.1
             - circleci/jruby:9.1
             - circleci/jruby:9.2