diff --git a/.rubocop.yml b/.rubocop.yml
index 4f81136..2a6481f 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -17,3 +17,9 @@ LeadingCommentSpace:
 
 LineLength:
   Enabled: false
+
+Style/FileName:
+  Exclude:
+    - 'Berksfile'
+    - 'Gemfile'
+    - 'Vagrantfile'
diff --git a/.ruby-version b/.ruby-version
index a831048..829664e 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-ruby-2.3.0
+ruby-2.3.5
diff --git a/.travis.yml b/.travis.yml
index 2d32be3..fafb7e7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: ruby
 rvm:
-  - 2.3.0
+  - 2.3.5
 
 sudo: required
 services: docker
diff --git a/Berksfile b/Berksfile
index d0a8214..829f25d 100644
--- a/Berksfile
+++ b/Berksfile
@@ -1,14 +1,17 @@
+# frozen_string_literal: true
+
 source 'https://supermarket.chef.io/'
 
 metadata
 
 group :vagrant do
-    cookbook 'ark', '= 2.2.1'
-    cookbook 'apt'
-    cookbook 'apache2'
-    cookbook 'elasticsearch', '~ 2.4.0'
-    cookbook 'java'
-    cookbook 'ohai'
-    cookbook 'netstat'
-    cookbook 'chef_nginx', '~ 2.9.0'
+  cookbook 'ark', '>= 2.2.1'
+  cookbook 'apt'
+  cookbook 'apache2'
+  cookbook 'build-essential'
+  cookbook 'elasticsearch', '~ 2.4.0'
+  cookbook 'java'
+  cookbook 'netstat'
+  cookbook 'ohai'
+  cookbook 'chef_nginx', '~ 2.9.0'
 end
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 981ff98..31b4644 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+## 0.2.2:
+* Update to fix travis runs for CentOS7 and Ubuntu 16.04. #102 (@drenalin23)
+* Update `ark` #103 (@drenalin23)
+* `kibana_plugin` resource to manage plugins #106 (@InformatiQ)
+* Kibana5, Amazon Linux fixes #107 (@InformatiQ)
+* switch `node['kibana']['version']` to integer #109 (@InformatiQ)
+* Lint fixes #104  (@drenalin23)
+
 ## 0.2.1:
 * fix issue with bin_path for package installs (@drenalin23)
 * update the nginx source attribute so it is easier to override in wrapper cookbooks (@drenalin23)
diff --git a/Gemfile b/Gemfile
index 2a64e3a..02830fd 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,15 +1,17 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 gem 'berkshelf'
 gem 'stove'
 
 group :test do
-  gem 'rake'
-  gem 'test-kitchen'
+  gem 'buff-extensions'
+  gem 'chefspec'
   gem 'foodcritic'
+  gem 'rake'
   gem 'rubocop'
-  gem 'chefspec'
-  gem 'buff-extensions'
+  gem 'test-kitchen'
 end
 
 group :vagrant do
@@ -17,9 +19,9 @@ group :vagrant do
 end
 
 group :development do
-  gem 'knife-cookbook-doc'
   gem 'kitchen-openstack'
   gem 'kitchen-transport-rsync'
+  gem 'knife-cookbook-doc'
 end
 
 group :integration_docker do
diff --git a/README.md b/README.md
index 5f4bb2f..a0f4e88 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ Kibana requires ElasticSearch index to be configured to work as per logstash req
 
 ## Platform:
 
-* Ubuntu 12.04, 14.04.
+* Ubuntu 14.04, 16.04
 * CentOS 6, 7
 
 ## Cookbooks:
@@ -33,7 +33,7 @@ Kibana requires ElasticSearch index to be configured to work as per logstash req
 * `node['kibana']['base_dir']` - The base directory of kibana. Defaults to `/opt/kibana`.
 * `node['kibana']['user']` - The user under which Kibana is installed. Defaults to `kibana`.
 * `node['kibana']['group']` - The group under which Kibana is installed. Defaults to `kibana`.
-* `node['kibana']['install_method']` - Install method. Can be source or release. Defaults to `release`.
+* `node['kibana']['install_method']` - Install method. Can be `package` or `release`. Defaults to `release`.
 * `node['kibana']['url']` - Url of tarball. Defaults to `https://download.elasticsearch.org/kibana/kibana/kibana-#{node['kibana']['kibana3_version']}.tar.gz`.
 * `node['kibana']['kibana3_checksum']` - Checksum of the tarball.
 * `node['kibana']['kibana4_checksum']` - Checksum of the tarball.
@@ -81,6 +81,7 @@ Kibana requires ElasticSearch index to be configured to work as per logstash req
 * [kibana::default](#kibanadefault) - Install Kibana.
 * kibana::kibana3
 * kibana::kibana4
+* kibana::kibana5
 * kibana::nginx
 
 ## kibana::apache
@@ -139,6 +140,6 @@ end
 
 # License and Maintainers
 
-Maintainers:: Peter Donald (<peter@realityforge.org>), Dimitry Ryobryshkin (@cyberflow), Scott Nelson Windels (<scott@drenalin.com>)
+Maintainers:: Peter Donald (<peter@realityforge.org>), Dimitry Ryobryshkin (@cyberflow), Scott Nelson Windels (<scott@drenalin.com>), Michael Burns (@mburns)
 
 License:: Apache 2.0
diff --git a/Rakefile b/Rakefile
index 72617a9..8348bb9 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,4 +1,3 @@
-# Encoding: utf-8
 # frozen_string_literal: true
 
 require 'rake'
@@ -6,6 +5,7 @@ require 'rake/testtask'
 require 'rspec/core/rake_task'
 require 'rubocop/rake_task'
 require 'bundler/setup'
+require 'foodcritic'
 
 require 'stove/rake_task'
 Stove::RakeTask.new
@@ -15,9 +15,14 @@ RuboCop::RakeTask.new(:rubocop) do |task|
   task.fail_on_error = true
 end
 
-desc 'Foodcritic linter'
-task :foodcritic do
-  sh 'foodcritic -f any -t ~FC007 .'
+FoodCritic::Rake::LintTask.new do |t|
+  t.options = {
+    fail_tags: ['any'],
+    tags: [
+      '~FC007', # Don't reflect recipe dependencies
+      '~FC071'  # Don't require LICENSE file
+    ]
+  }
 end
 
 desc 'Run Test Kitchen integration tests'
@@ -50,4 +55,4 @@ RSpec::Core::RakeTask.new(:unit) do |t|
   t.pattern = 'test/unit/spec/*_spec.rb'
 end
 
-task default: [:rubocop, :foodcritic, :unit]
+task default: %i[rubocop foodcritic unit]
diff --git a/Vagrantfile b/Vagrantfile
index 5252ca3..1afdaba 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -1,27 +1,29 @@
+# frozen_string_literal: true
+
 # -*- mode: ruby -*-
 # vi: set ft=ruby :
 
-Vagrant.configure("2") do |config|
+Vagrant.configure('2') do |config|
   # All Vagrant configuration is done here. The most common configuration
   # options are documented and commented below. For a complete reference,
   # please see the online documentation at vagrantup.com.
 
-  config.vm.hostname = "kibana"
+  config.vm.hostname = 'kibana'
 
   # Every Vagrant virtual environment requires a box to build off of.
-  config.vm.box = "opscode-precise64"
+  config.vm.box = 'opscode-precise64'
 
   # The url from where the 'config.vm.box' box will be fetched if it
   # doesn't already exist on the user's system.
-  config.vm.box_url = "https://opscode-vm-bento.s3.amazonaws.com/vagrant/opscode_ubuntu-12.04_provisionerless.box"
+  config.vm.box_url = 'https://opscode-vm-bento.s3.amazonaws.com/vagrant/opscode_ubuntu-12.04_provisionerless.box'
 
-  config.omnibus.chef_version = '11.6.2'
+  config.omnibus.chef_version = '12.7.2'
 
   # Assign this VM to a host-only network IP, allowing you to access it
   # via the IP. Host-only networks can talk to the host machine as well as
   # any other machines on the same network, but cannot be accessed (through this
   # network interface) by any external networks.
-  config.vm.network :private_network, ip: "33.33.33.10"
+  config.vm.network :private_network, ip: '33.33.33.10'
 
   # Create a public network, which generally matched to bridged network.
   # Bridged networks make the machine appear as another physical device on
@@ -57,7 +59,7 @@ Vagrant.configure("2") do |config|
   # information on available options.
 
   # The path to the Berksfile to use with Vagrant Berkshelf
-  config.berkshelf.berksfile_path = "./Berksfile"
+  config.berkshelf.berksfile_path = './Berksfile'
 
   # Enabling the Berkshelf plugin. To enable this globally, add this configuration
   # option to your ~/.vagrant.d/Vagrantfile file
@@ -73,17 +75,17 @@ Vagrant.configure("2") do |config|
 
   config.vm.provision :chef_solo do |chef|
     chef.json = {
-      "kibana" => {
-        "apache" => {
-          "basic_auth" => 'on'
+      'kibana' => {
+        'apache' => {
+          'basic_auth' => 'on'
         }
       }
     }
 
     chef.run_list = [
-        "recipe[apt::default]",
-        "recipe[kibana::default]",
-        "recipe[kibana::apache]"
+      'recipe[apt::default]',
+      'recipe[kibana::default]',
+      'recipe[kibana::apache]'
     ]
   end
 end
diff --git a/attributes/default.rb b/attributes/default.rb
index 008d8e9..1aa54e6 100644
--- a/attributes/default.rb
+++ b/attributes/default.rb
@@ -1,4 +1,3 @@
-# Encoding: utf-8
 # frozen_string_literal: true
 
 #<> Kibana major version
@@ -7,7 +6,7 @@
 #<> Kibana3 exact version
 default['kibana']['kibana3_version'] = '3.1.2'
 default['kibana']['kibana3_checksum'] = '480562733c2c941525bfa26326b6fae5faf83109b452a6c4e283a5c37e3086ee'
-default['kibana']['kibana3_url'] = 'https://download.elastic.co/kibana/kibana/kibana-3.1.2.tar.gz'
+default['kibana']['kibana3_url'] = "https://download.elastic.co/kibana/kibana/kibana-#{node['kibana']['kibana3_version']}.tar.gz"
 
 #<> Kibana4 exact version
 default['kibana']['kibana4_version'] = '4.6.6'
diff --git a/libraries/version.rb b/libraries/version.rb
index ded4b66..64c2f5e 100644
--- a/libraries/version.rb
+++ b/libraries/version.rb
@@ -1,4 +1,3 @@
-# Encoding: utf-8
 # frozen_string_literal: true
 
 class Kibana
diff --git a/metadata.rb b/metadata.rb
index 55898f2..2a123ac 100644
--- a/metadata.rb
+++ b/metadata.rb
@@ -1,18 +1,20 @@
-# Encoding: utf-8
 # frozen_string_literal: true
 
 name 'kibana'
 maintainer 'Peter Donald'
 maintainer_email 'peter@realityforge.org'
-license 'Apache 2.0'
+license 'Apache-2.0'
 description 'Installs/Configures kibana, the logstash UI'
 long_description IO.read(File.join(File.dirname(__FILE__), 'README.md'))
-version '0.2.1'
+version '0.2.2'
 source_url 'https://github.com/realityforge/chef-kibana'
 issues_url 'https://github.com/realityforge/chef-kibana/issues'
 
+chef_version '>= 12' if respond_to?(:chef_version)
+
 supports 'ubuntu'
 supports 'debian'
+supports 'centos'
 
 depends 'build-essential'
 depends 'ark'
diff --git a/recipes/_service.rb b/recipes/_service.rb
index e9716a4..cb0cb01 100644
--- a/recipes/_service.rb
+++ b/recipes/_service.rb
@@ -1,4 +1,3 @@
-# Encoding: utf-8
 # frozen_string_literal: true
 
 template node['kibana']['service']['template_file'] do
@@ -17,5 +16,5 @@
 service 'kibana' do
   provider node['kibana']['service']['provider']
   supports start: true, restart: true, stop: true, status: true
-  action [:enable, :start]
+  action %i[enable start]
 end
diff --git a/recipes/apache.rb b/recipes/apache.rb
index 06f603f..bd76d19 100644
--- a/recipes/apache.rb
+++ b/recipes/apache.rb
@@ -1,4 +1,3 @@
-# Encoding: utf-8
 # frozen_string_literal: true
 
 =begin
diff --git a/recipes/default.rb b/recipes/default.rb
index 54f5109..53c37b1 100644
--- a/recipes/default.rb
+++ b/recipes/default.rb
@@ -1,4 +1,3 @@
-# Encoding: utf-8
 # frozen_string_literal: true
 
 =begin
diff --git a/recipes/kibana3.rb b/recipes/kibana3.rb
index a549aee..aa34c7e 100644
--- a/recipes/kibana3.rb
+++ b/recipes/kibana3.rb
@@ -1,4 +1,3 @@
-# Encoding: utf-8
 # frozen_string_literal: true
 
 include_recipe 'kibana'
diff --git a/recipes/kibana4.rb b/recipes/kibana4.rb
index a011cd5..7406067 100644
--- a/recipes/kibana4.rb
+++ b/recipes/kibana4.rb
@@ -1,4 +1,3 @@
-# Encoding: utf-8
 # frozen_string_literal: true
 
 include_recipe 'kibana'
@@ -15,11 +14,11 @@
   config_path = 'current/config/kibana.yml'
 elsif node['kibana']['install_method'] == 'package'
   node.default['kibana']['service']['bin_path'] = 'bin'
-  if node.platform_family? 'debian'
+  if platform_family? 'debian'
     apt_repository 'kibana' do
       uri node['kibana']['repository_url']
       distribution ''
-      components %w(stable main)
+      components %w[stable main]
       key node['kibana']['repository_key']
     end
   else
diff --git a/recipes/kibana5.rb b/recipes/kibana5.rb
index f277873..8e30dfb 100644
--- a/recipes/kibana5.rb
+++ b/recipes/kibana5.rb
@@ -1,4 +1,4 @@
-# Encoding: utf-8
+# frozen_string_literal: true
 
 include_recipe 'kibana'
 
@@ -14,11 +14,11 @@
   config_path = 'current/config/kibana.yml'
 elsif node['kibana']['install_method'] == 'package'
   node.default['kibana']['service']['bin_path'] = 'bin'
-  if node.platform_family? 'debian'
+  if platform_family? 'debian'
     apt_repository 'kibana' do
       uri node['kibana']['repository_url']
       distribution ''
-      components %w(stable main)
+      components %w[stable main]
       key node['kibana']['repository_key']
     end
   else
diff --git a/recipes/nginx.rb b/recipes/nginx.rb
index 9e7e625..a461d7d 100644
--- a/recipes/nginx.rb
+++ b/recipes/nginx.rb
@@ -1,5 +1,5 @@
-# Encoding: utf-8
 # frozen_string_literal: true
+
 include_recipe 'chef_nginx'
 
 template File.join(node['nginx']['dir'], 'sites-available', 'kibana') do
diff --git a/resources/plugin.rb b/resources/plugin.rb
index 3c1d287..8312c9d 100644
--- a/resources/plugin.rb
+++ b/resources/plugin.rb
@@ -1,6 +1,7 @@
+# frozen_string_literal: true
+
 resource_name :kibana_plugin
 
-property :name, String, name_property: true
 property :url, String
 property :kibana_home, String, default: ::File.join(node['kibana']['base_dir'], 'current')
 property :plugins_registry, String, default: ::File.join(node['kibana']['base_dir'], 'installedPugins.json')
@@ -17,7 +18,7 @@
 
 def plugin_exists?(name)
   list_arg = node['kibana']['version'] > 4 ? 'bin/kibana-plugin list' : 'bin/kibana plugin -l'
-  cmd_line = "#{list_arg}"
+  cmd_line = list_arg.to_s
   cmd = Mixlib::ShellOut.new(cmd_line, cwd: kibana_home)
   cmd.run_command
   cmd.stdout.include? name
@@ -36,7 +37,7 @@ def update_plugin_reg(action)
 
 action :install do
   install_arg = node['kibana']['version'] > 4 ? "bin/kibana-plugin install #{url}" : "bin/kibana plugin -i #{name} -u #{url}"
-  plugin_install = "#{install_arg}"
+  plugin_install = install_arg.to_s
   execute 'plugin-install' do
     cwd kibana_home
     command plugin_install
@@ -47,7 +48,7 @@ def update_plugin_reg(action)
 
 action :remove do
   remove_arg = node['kibana']['version'] > 4 ? "bin/kibana-plugin remove #{name}" : "bin/kibana plugin --remove #{name}"
-  plugin_remove = "#{remove_arg}"
+  plugin_remove = remove_arg.to_s
   execute 'plugin-remove' do
     cwd kibana_home
     command plugin_remove
diff --git a/spec/support/matchers.rb b/spec/support/matchers.rb
index c7907f0..33994ae 100644
--- a/spec/support/matchers.rb
+++ b/spec/support/matchers.rb
@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 # matcher for install_ark
 def install_ark(resource_name)
   ChefSpec::Matchers::ResourceMatcher.new(:ark, :install, resource_name)
diff --git a/test/integration/kibana3_apache/serverspec/default_spec.rb b/test/integration/kibana3_apache/serverspec/default_spec.rb
index db8e2cb..d313e61 100644
--- a/test/integration/kibana3_apache/serverspec/default_spec.rb
+++ b/test/integration/kibana3_apache/serverspec/default_spec.rb
@@ -1,5 +1,5 @@
-# Encoding: utf-8
 # frozen_string_literal: true
+
 require 'spec_helper'
 
 describe 'kibana' do
diff --git a/test/integration/kibana3_apache/serverspec/spec_helper.rb b/test/integration/kibana3_apache/serverspec/spec_helper.rb
index be8d94d..9998d11 100644
--- a/test/integration/kibana3_apache/serverspec/spec_helper.rb
+++ b/test/integration/kibana3_apache/serverspec/spec_helper.rb
@@ -1,5 +1,5 @@
-# Encoding: utf-8
 # frozen_string_literal: true
+
 require 'serverspec'
 
 # Required by serverspec
diff --git a/test/integration/kibana3_nginx/serverspec/default_spec.rb b/test/integration/kibana3_nginx/serverspec/default_spec.rb
index bac028a..1d3f94a 100644
--- a/test/integration/kibana3_nginx/serverspec/default_spec.rb
+++ b/test/integration/kibana3_nginx/serverspec/default_spec.rb
@@ -1,5 +1,5 @@
-# Encoding: utf-8
 # frozen_string_literal: true
+
 require 'spec_helper'
 
 describe 'kibana' do
diff --git a/test/integration/kibana3_nginx/serverspec/spec_helper.rb b/test/integration/kibana3_nginx/serverspec/spec_helper.rb
index be8d94d..9998d11 100644
--- a/test/integration/kibana3_nginx/serverspec/spec_helper.rb
+++ b/test/integration/kibana3_nginx/serverspec/spec_helper.rb
@@ -1,5 +1,5 @@
-# Encoding: utf-8
 # frozen_string_literal: true
+
 require 'serverspec'
 
 # Required by serverspec
diff --git a/test/integration/kibana3_source/serverspec/default_spec.rb b/test/integration/kibana3_source/serverspec/default_spec.rb
index 7846844..8c634ce 100644
--- a/test/integration/kibana3_source/serverspec/default_spec.rb
+++ b/test/integration/kibana3_source/serverspec/default_spec.rb
@@ -1,5 +1,5 @@
-# Encoding: utf-8
 # frozen_string_literal: true
+
 require 'spec_helper'
 
 describe 'kibana' do
diff --git a/test/integration/kibana3_source/serverspec/spec_helper.rb b/test/integration/kibana3_source/serverspec/spec_helper.rb
index be8d94d..9998d11 100644
--- a/test/integration/kibana3_source/serverspec/spec_helper.rb
+++ b/test/integration/kibana3_source/serverspec/spec_helper.rb
@@ -1,5 +1,5 @@
-# Encoding: utf-8
 # frozen_string_literal: true
+
 require 'serverspec'
 
 # Required by serverspec
diff --git a/test/integration/kibana4_apache/serverspec/default_spec.rb b/test/integration/kibana4_apache/serverspec/default_spec.rb
index 51e84f8..7e04daf 100644
--- a/test/integration/kibana4_apache/serverspec/default_spec.rb
+++ b/test/integration/kibana4_apache/serverspec/default_spec.rb
@@ -1,5 +1,5 @@
-# Encoding: utf-8
 # frozen_string_literal: true
+
 require 'spec_helper'
 
 describe 'kibana' do
diff --git a/test/integration/kibana4_apache/serverspec/spec_helper.rb b/test/integration/kibana4_apache/serverspec/spec_helper.rb
index be8d94d..9998d11 100644
--- a/test/integration/kibana4_apache/serverspec/spec_helper.rb
+++ b/test/integration/kibana4_apache/serverspec/spec_helper.rb
@@ -1,5 +1,5 @@
-# Encoding: utf-8
 # frozen_string_literal: true
+
 require 'serverspec'
 
 # Required by serverspec
diff --git a/test/integration/kibana4_nginx/serverspec/default_spec.rb b/test/integration/kibana4_nginx/serverspec/default_spec.rb
index 21964d2..16936fe 100644
--- a/test/integration/kibana4_nginx/serverspec/default_spec.rb
+++ b/test/integration/kibana4_nginx/serverspec/default_spec.rb
@@ -1,5 +1,5 @@
-# Encoding: utf-8
 # frozen_string_literal: true
+
 require 'spec_helper'
 
 describe 'kibana' do
diff --git a/test/integration/kibana4_nginx/serverspec/spec_helper.rb b/test/integration/kibana4_nginx/serverspec/spec_helper.rb
index be8d94d..9998d11 100644
--- a/test/integration/kibana4_nginx/serverspec/spec_helper.rb
+++ b/test/integration/kibana4_nginx/serverspec/spec_helper.rb
@@ -1,5 +1,5 @@
-# Encoding: utf-8
 # frozen_string_literal: true
+
 require 'serverspec'
 
 # Required by serverspec
diff --git a/test/unit/spec/_service_spec.rb b/test/unit/spec/_service_spec.rb
index 70ad269..ea68470 100644
--- a/test/unit/spec/_service_spec.rb
+++ b/test/unit/spec/_service_spec.rb
@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 require 'chefspec'
 require_relative 'spec_helper'
 
@@ -38,10 +39,10 @@
 describe 'kibana::_service' do
   before { stub_resources }
   let(:chef_run) { ChefSpec::SoloRunner.new(CENTOS_OPTS).converge(described_recipe) }
-  let(:template) { chef_run.template('/etc/init.d/kibana') }
+  let(:template) { chef_run.template('/usr/lib/systemd/system/kibana.service') }
 
-  it 'creates an init.d template at /etc/init.d/kibana' do
-    expect(chef_run).to create_template('/etc/init.d/kibana')
+  it 'creates an init.d template at /usr/lib/systemd/system/kibana.service' do
+    expect(chef_run).to create_template('/usr/lib/systemd/system/kibana.service')
   end
   it 'enables a kibana service' do
     expect(chef_run).to enable_service('kibana')
diff --git a/test/unit/spec/apache_spec.rb b/test/unit/spec/apache_spec.rb
index 60ded7b..7e41d63 100644
--- a/test/unit/spec/apache_spec.rb
+++ b/test/unit/spec/apache_spec.rb
@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 require 'chefspec'
 require_relative 'spec_helper'
 
@@ -9,4 +10,8 @@
 
   # TODO: creates a template /etc/apache2/htpasswd
   # TODO: creates a template /etc/apache2/sites-available/kibana.conf
+
+  it 'converges successfully' do
+    expect { :chef_run }.to_not raise_error
+  end
 end
diff --git a/test/unit/spec/default_spec.rb b/test/unit/spec/default_spec.rb
index c37acca..6b6622d 100644
--- a/test/unit/spec/default_spec.rb
+++ b/test/unit/spec/default_spec.rb
@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 require 'chefspec'
 require_relative 'spec_helper'
 
diff --git a/test/unit/spec/kibana3_spec.rb b/test/unit/spec/kibana3_spec.rb
index d3b5b66..150d36c 100644
--- a/test/unit/spec/kibana3_spec.rb
+++ b/test/unit/spec/kibana3_spec.rb
@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 require 'chefspec'
 require_relative 'spec_helper'
 
diff --git a/test/unit/spec/kibana4_spec.rb b/test/unit/spec/kibana4_spec.rb
index 518e56e..48cfb14 100644
--- a/test/unit/spec/kibana4_spec.rb
+++ b/test/unit/spec/kibana4_spec.rb
@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 require 'chefspec'
 require_relative 'spec_helper'
 
@@ -7,7 +8,8 @@
 
   let(:chef_run) do
     ChefSpec::SoloRunner.new(UBUNTU_OPTS) do |node|
-      node.default['kibana']['install_method'] = 'release'
+      node.override['kibana']['version'] = 4
+      node.override['kibana']['install_method'] = 'release'
     end.converge(described_recipe, 'kibana::_service')
   end
   let(:template) { chef_run.template('/opt/kibana/current/config/kibana.yml') }
diff --git a/test/unit/spec/nginx_spec.rb b/test/unit/spec/nginx_spec.rb
index 1f08c04..79b9194 100644
--- a/test/unit/spec/nginx_spec.rb
+++ b/test/unit/spec/nginx_spec.rb
@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 require 'chefspec'
 require_relative 'spec_helper'
 
@@ -6,4 +7,8 @@
   before { stub_resources }
 
   let(:chef_run) { ChefSpec::SoloRunner.new(UBUNTU_OPTS).converge(described_recipe) }
+
+  it 'converges successfully' do
+    expect { :chef_run }.to_not raise_error
+  end
 end
diff --git a/test/unit/spec/spec_helper.rb b/test/unit/spec/spec_helper.rb
index add724f..4379f96 100644
--- a/test/unit/spec/spec_helper.rb
+++ b/test/unit/spec/spec_helper.rb
@@ -1,5 +1,5 @@
-# encoding: UTF-8
 # frozen_string_literal: true
+
 # -*- mode: ruby -*-
 # vi: set ft=ruby :
 
@@ -21,11 +21,11 @@
 }.freeze
 ::CENTOS_OPTS = {
   platform: 'centos',
-  version: '6.0'
+  version: '6.9'
 }.freeze
 ::CENTOS7_OPTS = {
   platform: 'centos',
-  version: '7.0'
+  version: '7.4.1708'
 }.freeze
 
 def stub_resources; end