4 files changed, 28 insertions, 13 deletions
diff --git a/CLI/ruby/.gitlab-ci.yml b/CLI/ruby/.gitlab-ci.yml
index 930afec..d573ce5 100644
--- a/CLI/ruby/.gitlab-ci.yml
+++ b/CLI/ruby/.gitlab-ci.yml
@@ -1,5 +1,4 @@
 image: ruby:2.7
-
 stages:
   - build
   - test
@@ -19,26 +18,39 @@ cache: &cache
 
 before_script:
   - cd CLI/ruby
+  - gem update --system
+  - bundle update --bundler
   - bundle install -j $(nproc)
 
-build:
-  stage: build
+test:2.7:
+  image: ruby:2.7
+  stage: test
+  cache:
+    <<: *cache
+    policy: pull
+  script:
+    - bundle exec rspec --format progress
+
+test:2.6:
+  image: ruby:2.6
+  stage: test
+  cache:
+    <<: *cache
+    policy: pull
   script:
-    - ruby -v
-    - bundle env
+    - bundle exec rspec --format progress
 
-test:
+test:2.5:
+  image: ruby:2.5
   stage: test
-  needs: [build]
   cache:
     <<: *cache
     policy: pull
   script:
-    - bundle exec rspec
+    - bundle exec rspec --format progress
 
 lint:
   stage: test
-  needs: [build]
   cache:
     <<: *cache
     policy: pull
@@ -47,7 +59,7 @@ lint:
 
 release:
   stage: release
-  needs: [test, lint]
+  needs: ["test:2.7", "test:2.6", "test:2.5", lint]
   rules:
     - if: $CI_COMMIT_TAG =~ /^ruby\/v.*$/
   cache:
diff --git a/CLI/ruby/.rubocop.yml b/CLI/ruby/.rubocop.yml
index 88abd76..970b547 100644
--- a/CLI/ruby/.rubocop.yml
+++ b/CLI/ruby/.rubocop.yml
@@ -1,5 +1,5 @@
 AllCops:
-  TargetRubyVersion: 2.4
+  TargetRubyVersion: 2.5
   NewCops: enable
 
 Layout/EmptyLineAfterGuardClause:
diff --git a/CLI/ruby/CHANGELOG.md b/CLI/ruby/CHANGELOG.md
index 18763e9..8174833 100644
--- a/CLI/ruby/CHANGELOG.md
+++ b/CLI/ruby/CHANGELOG.md
@@ -1,6 +1,7 @@
 # Changelog
 
 ## Unreleased
+- Add ruby testing matrix for versions 2.5, 2.6 and 2.7
 
 ## 0.2.1
 - Minor updates to the [yard documentation](https://rubydoc.info/gems/terminal_game_of_life/)
diff --git a/CLI/ruby/game_of_life.gemspec b/CLI/ruby/game_of_life.gemspec
index 73ea1c8..9f88e68 100644
--- a/CLI/ruby/game_of_life.gemspec
+++ b/CLI/ruby/game_of_life.gemspec
@@ -12,15 +12,17 @@ Gem::Specification.new do |spec|
   spec.description   = "Conway's game of life implementation as a CLI ruby gem."
   spec.homepage      = "https://gitlab.com/a14m/game-of-life"
   spec.license       = "MIT"
-  spec.required_ruby_version = ">= 2.4.0"
+  spec.required_ruby_version = ">= 2.5.0"
 
   spec.metadata["allowed_push_host"] = "https://rubygems.org"
   spec.metadata["homepage_uri"]      = spec.homepage
   spec.metadata["source_code_uri"]   = "https://gitlab.com/a14m/game-of-life/-/tree/master/CLI/ruby/"
+  spec.metadata["documentation_uri"] = "https://rubydoc.info/gems/terminal_game_of_life"
+  spec.metadata["changelog_uri"]     = "https://gitlab.com/a14m/game-of-life/-/blob/master/CLI/ruby/CHANGELOG.md"
 
   spec.executables   = ["game-of-life"]
   spec.require_paths = ["lib"]
-  spec.files         = Dir["README.md", "game_of_life.gemspec", "bin/game-of-life", "lib/**/*.rb"]
+  spec.files         = Dir["README.md", "game_of_life.gemspec", "bin/game-of-life", "lib/**/*.rb", ".yardopts"]
 
   spec.add_dependency "thor", "~> 1.0"