diff --git a/.rubocop.yml b/.rubocop.yml
new file mode 100644
index 0000000..eaf6e6c
--- /dev/null
+++ b/.rubocop.yml
@@ -0,0 +1,14 @@
+Documentation:
+  Enabled: false
+
+Style/MultilineOperationIndentation:
+  Enabled: false
+
+Style/Encoding:
+  Enabled: false
+
+AllCops:
+  # Include gemspec and Rakefile
+  Include:
+    - '**/*.gemspec'
+    - '**/Rakefile'
diff --git a/.travis.yml b/.travis.yml
index 906b381..15c225a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,10 +1,11 @@
 language: ruby
-rvm:
-  - "1.9.3"
-  - "2.0.0"
-  - "2.1.0"
-  - "2.2.4"
-  - "2.3.0"
 install: bundle install -j 4 --retry 3
 script:
   - RAILS_ENV=test bundle exec rspec spec
+matrix:
+  include:
+    - rvm: 2.3
+    - rvm: 2.4
+    - rvm: 2.5
+    - rvm: 2.6
+    - rvm: 2.7
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..6b822d1
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,14 @@
+# Change Log
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/).
+
+## [1.0.0] - 2020-03-11
+## Changed
+- Add support for ruby 2.7
+- Remove support for ruby < 2.3
+- Change required version for gem heartcheck to fit for newer supported ruby versions
+
+## [0.1.0] - 2015-07-08
+## Changed
+- A plugin to check CAS accessibility connection with heartcheck
diff --git a/heartcheck-cas.gemspec b/heartcheck-cas.gemspec
index b473708..965ecf0 100644
--- a/heartcheck-cas.gemspec
+++ b/heartcheck-cas.gemspec
@@ -1,24 +1,30 @@
 # coding: utf-8
-lib = File.expand_path('../lib', __FILE__)
+# frozen_string_literal: true
+
+lib = File.expand_path('lib', __dir__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require 'heartcheck/cas/version'
 
 Gem::Specification.new do |spec|
-  spec.name          = "heartcheck-cas"
+  spec.name          = 'heartcheck-cas'
   spec.version       = Heartcheck::Cas::VERSION
-  spec.authors       = ["andrerocker"]
-  spec.email         = ["andre.souza@gmail.com"]
+  spec.authors       = ['andrerocker']
+  spec.email         = ['andre.souza@gmail.com']
 
   spec.summary       = 'cas checkers to heartcheck'
   spec.description   = 'Provides cas checkers to heartcheck'
   spec.homepage      = 'http://github.com/locaweb/heartcheck-cas'
-  spec.license       = "MIT"
+  spec.license       = 'MIT'
   spec.files         = Dir.glob('lib/**/*')
-  spec.require_paths = ["lib"]
+  spec.require_paths = ['lib']
+
+  spec.required_ruby_version = '>= 2.3'
+
+  spec.add_dependency 'heartcheck', '~> 2.0'
 
   spec.add_development_dependency 'bundler', '> 1.6'
+  spec.add_development_dependency 'pry-nav', '~> 0.2.4'
   spec.add_development_dependency 'rake', '~> 10.0'
   spec.add_development_dependency 'rspec', '~> 3.3'
-  spec.add_development_dependency 'pry-nav', '~> 0.2.4'
-  spec.add_dependency 'heartcheck', '~> 1.0'
+  spec.add_development_dependency 'rubocop'
 end
diff --git a/lib/heartcheck/cas/http_client.rb b/lib/heartcheck/cas/http_client.rb
index 66c8b19..f0fcf52 100644
--- a/lib/heartcheck/cas/http_client.rb
+++ b/lib/heartcheck/cas/http_client.rb
@@ -1,4 +1,7 @@
 # enconding: utf-8
+require 'net/http'
+require 'openssl'
+
 module Heartcheck
   module Cas
     class HttpClient
@@ -12,7 +15,7 @@ def post(url, params)
         request.set_form_data(params)
         base_client(uri).request(request)
       end
-      
+
       def base_client(uri)
         http = Net::HTTP.new(uri.host, uri.port)
         http.use_ssl = uri.scheme.eql?('https')
diff --git a/lib/heartcheck/cas/version.rb b/lib/heartcheck/cas/version.rb
index 28b8b78..59fb7ca 100644
--- a/lib/heartcheck/cas/version.rb
+++ b/lib/heartcheck/cas/version.rb
@@ -1,5 +1,5 @@
 module Heartcheck
   module Cas
-    VERSION = "0.1.0"
+    VERSION = "1.0.0"
   end
 end
diff --git a/spec/heartcheck/cas/http_client_spec.rb b/spec/heartcheck/cas/http_client_spec.rb
index ae474c3..cd5e6a1 100644
--- a/spec/heartcheck/cas/http_client_spec.rb
+++ b/spec/heartcheck/cas/http_client_spec.rb
@@ -4,9 +4,11 @@
   describe '#post' do
     context 'make a post request' do
       it 'should create a hastebin document' do
-        response = described_class.post('http://hastebin.com/documents',  {data: "Bacon"})
+        response = described_class.post(
+          'https://reqbin.com/echo/post/json', { data: 'Bacon' }
+        )
         expect(response.code).to eq "200"
-        expect(response.body).to match /key/
+        expect(response.body).to match /success/
       end
     end
   end