.circleci/config.yml in dead_end-3.1.2 vs .circleci/config.yml in dead_end-4.0.0

@@ -45,29 +45,31 @@
       - ruby/install-deps
       - <<: *unit
 
   "ruby-3-1":
     docker:
-      - image: 'cimg/base:stable'
+      - image: 'cimg/ruby:3.1'
     steps:
       - checkout
-      - ruby/install:
-          version: '3.1.2'
-      - run: ruby -v
       - ruby/install-deps
       - <<: *unit
 
   "ruby-3-2":
     docker:
-      - image: 'cimg/base:stable'
+      - image: 'ruby:3.2.0-preview1'
     steps:
       - checkout
-      - ruby/install:
-          version: '3.2.0-preview1'
-      - run: ruby -v
       - ruby/install-deps
       - <<: *unit
+  "ruby-3-2-yjit":
+    docker:
+      - image: 'ruby:3.2.0-preview1'
+    steps:
+      - run: echo "export RUBY_YJIT_ENABLE=1" >> $BASH_ENV
+      - checkout
+      - ruby/install-deps
+      - <<: *unit
 
   "lint":
     docker:
       - image: circleci/ruby:3.0
     steps:
@@ -83,6 +85,7 @@
       - "ruby-2-6"
       - "ruby-2-7"
       - "ruby-3-0"
       - "ruby-3-1"
       - "ruby-3-2"
+      - "ruby-3-2-yjit"
       - "lint"