.gitlab-ci.yml in rubocopital-0.5.2 vs .gitlab-ci.yml in rubocopital-0.5.3

@@ -1,37 +1,23 @@
 stages:
   - test
 
-test_ruby_2_2:
-  image: ruby:2.2.10
-  stage: test
-  script:
-    - bundle install
-    - bundle exec rake
-
-test_ruby_2_3:
-  image: ruby:2.3.7
-  stage: test
-  script:
-    - bundle install
-    - bundle exec rake
-
 test_ruby_2_4:
-  image: ruby:2.4.4
+  image: ruby:2.4.9
   stage: test
   script:
     - bundle install
     - bundle exec rake
 
 test_ruby_2_5:
-  image: ruby:2.5.1
+  image: ruby:2.5.7
   stage: test
   script:
     - bundle install
     - bundle exec rake
 
 test_ruby_2_6:
-  image: ruby:2.6-rc
+  image: ruby:2.6.5
   stage: test
   script:
     - bundle install
     - bundle exec rake