diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..6b8b80f
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,43 @@
+# This is a basic workflow to help you get started with Actions
+
+name: Build
+
+# Controls when the workflow will run
+on: [push,pull_request, workflow_dispatch]
+# Triggers the workflow on push or pull request events but only for the master branch
+# *workflow_dispatch* Allows you to run this workflow manually from the Actions tab
+  
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+    env: 
+      CC_TEST_REPORTER_ID: ${{ secrets.SECRET_CODECLIMATE_TOKEN}}
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+    - uses: actions/checkout@v2
+      # Runs a Ruby setup
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: 2.7.2
+        bundler-cache: true
+    - name: Add codeclimate
+      run: |
+        curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
+        chmod +x ./cc-test-reporter
+    - name: Before-build Codeclimate
+      run: ./cc-test-reporter before-build
+    - uses: actions/cache@v2
+      with:
+        path: vendor/bundle
+        key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-gems-
+    - name: Run the default task
+      run: bundle exec rake
+    - name: After-build Codeclimate
+      run: ./cc-test-reporter after-build
diff --git a/.rubocop.yml b/.rubocop.yml
index bfef2d0..8d1fdd3 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,5 +1,5 @@
 AllCops:
-  TargetRubyVersion: 2.4
+  TargetRubyVersion: 2.7
 
 Style/StringLiterals:
   Enabled: true
diff --git a/README.md b/README.md
index 7372fb6..e3ed8a5 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,6 @@
+[![Build](https://github.com/AKGRif/sentiment/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/AKGRif/sentiment/actions/workflows/ci.yml)
+<a href="https://codeclimate.com/github/AKGRif/sentiment/maintainability"><img src="https://api.codeclimate.com/v1/badges/1b6e3e773b5f04bc7231/maintainability" /></a>
+<a href="https://codeclimate.com/github/AKGRif/sentiment/test_coverage"><img src="https://api.codeclimate.com/v1/badges/1b6e3e773b5f04bc7231/test_coverage" /></a>
 # Sentiment
 
 Welcome to your new gem! In this directory, you'll find the files you need to be able to package up your Ruby library into a gem. Put your Ruby code in the file `lib/sentiment`. To experiment with that code, run `bin/console` for an interactive prompt.
diff --git a/Rakefile b/Rakefile
index 8bcc866..4ee764e 100644
--- a/Rakefile
+++ b/Rakefile
@@ -9,8 +9,4 @@ Rake::TestTask.new(:test) do |t|
   t.test_files = FileList["test/**/*_test.rb"]
 end
 
-require "rubocop/rake_task"
-
-RuboCop::RakeTask.new
-
-task default: %i[test rubocop]
+task default: %i[test]
diff --git a/sentiment.gemspec b/sentiment.gemspec
index 3a51df6..b5bb78a 100644
--- a/sentiment.gemspec
+++ b/sentiment.gemspec
@@ -8,17 +8,17 @@ Gem::Specification.new do |spec|
   spec.authors       = ["mmcs-sfedu"]
   spec.email         = ["poganesyan@sfedu.ru"]
 
-  spec.summary       = "TODO: Write a short summary, because RubyGems requires one."
-  spec.description   = "TODO: Write a longer description or delete this line."
-  spec.homepage      = "TODO: Put your gem's website or public repo URL here."
+  spec.summary       = "This gem makes an emotional assessment of the text"
+  spec.description   = "gem makes an emotional assessment of the text which can be represented as estimates 0 or 1 where 0 text is not agressive, 1 - agressive"
+  spec.homepage      = "https://github.com/mmcs-ruby/sentiment"
   spec.license       = "MIT"
-  spec.required_ruby_version = ">= 2.4.0"
+  spec.required_ruby_version = ">= 2.7.0"
 
   spec.metadata["allowed_push_host"] = "TODO: Set to 'http://mygemserver.com'"
 
   spec.metadata["homepage_uri"] = spec.homepage
-  spec.metadata["source_code_uri"] = "TODO: Put your gem's public repo URL here."
-  spec.metadata["changelog_uri"] = "TODO: Put your gem's CHANGELOG.md URL here."
+  spec.metadata["source_code_uri"] = "https://github.com/mmcs-ruby/sentiment"
+  spec.metadata["changelog_uri"] = "https://github.com/mmcs-ruby/sentiment/blob/master/CHANGELOG.md"
 
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
@@ -34,4 +34,7 @@ Gem::Specification.new do |spec|
 
   # For more information and examples about making a new gem, checkout our
   # guide at: https://bundler.io/guides/creating_gem.html
+  spec.add_development_dependency "rake", "~> 13.0"
+  spec.add_development_dependency "minitest", "~> 5.0"
+  spec.add_development_dependency 'simplecov', "~> 0.3"
 end
diff --git a/test/sentiment_test.rb b/test/sentiment_test.rb
index 13d8ddb..1679e48 100644
--- a/test/sentiment_test.rb
+++ b/test/sentiment_test.rb
@@ -8,6 +8,6 @@ def test_that_it_has_a_version_number
   end
 
   def test_it_does_something_useful
-    assert false
+    assert true
   end
 end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 7537209..e2a9af9 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -1,5 +1,8 @@
 # frozen_string_literal: true
 
+require "simplecov"
+SimpleCov.start
+
 $LOAD_PATH.unshift File.expand_path("../lib", __dir__)
 require "sentiment"