diff --git a/.expeditor/config.yml b/.expeditor/config.yml
index 330b6a5..5283bc0 100644
--- a/.expeditor/config.yml
+++ b/.expeditor/config.yml
@@ -1,5 +1,6 @@
 # Documentation available at https://expeditor.chef.io/docs/getting-started/
 ---
+
 # Slack channel in Chef Software slack to send notifications about build failures, etc
 slack:
   notify_channel: chef-found-notify
@@ -11,6 +12,8 @@ rubygems:
 github:
   # This deletes the GitHub PR branch after successfully merged into the release branch
   delete_branch_on_merge: true
+  # The tag format to use (e.g. v1.0.0)
+  version_tag_format: "v{{version}}"
   # allow bumping the minor release via label
   minor_bump_labels:
     - "Expeditor: Bump Version Minor"
diff --git a/.expeditor/verify.pipeline.yml b/.expeditor/verify.pipeline.yml
index a3efc1c..81cc2b6 100644
--- a/.expeditor/verify.pipeline.yml
+++ b/.expeditor/verify.pipeline.yml
@@ -1,28 +1,44 @@
+---
+expeditor:
+  defaults:
+    buildkite:
+      timeout_in_minutes: 30
+
 steps:
 
 - label: run-lint-and-specs-ruby-2.4
   command:
-    - asdf local ruby 2.4.5
-    - bundle install --jobs=7 --retry=3
+    - bundle install --jobs=7 --retry=3 --without docs debug
     - bundle exec rake
   expeditor:
     executor:
       docker:
+        image: ruby:2.4-stretch
 
 - label: run-lint-and-specs-ruby-2.5
   command:
-    - asdf local ruby 2.5.5
-    - bundle install --jobs=7 --retry=3
+    - bundle install --jobs=7 --retry=3 --without docs debug
     - bundle exec rake
   expeditor:
     executor:
       docker:
+        image: ruby:2.5-stretch
 
 - label: run-lint-and-specs-ruby-2.6
   command:
-    - asdf local ruby 2.6.3
-    - bundle install --jobs=7 --retry=3
+    - bundle install --jobs=7 --retry=3 --without docs debug
+    - bundle exec rake
+  expeditor:
+    executor:
+      docker:
+        image: ruby:2.6-stretch
+
+- label: run-specs-windows
+  command:
+    - bundle install --jobs=7 --retry=3 --without docs debug
+    - bundle env
     - bundle exec rake
   expeditor:
     executor:
       docker:
+        host_os: windows
diff --git a/Gemfile b/Gemfile
index 432ee84..60cad82 100755
--- a/Gemfile
+++ b/Gemfile
@@ -3,19 +3,19 @@ source "https://rubygems.org"
 gemspec
 
 group :docs do
-  gem "yard"
-  gem "redcarpet"
   gem "github-markup"
+  gem "redcarpet"
+  gem "yard"
 end
 
 group :test do
-  gem "chefstyle", git: "https://github.com/chef/chefstyle.git", branch: "master"
-  gem "rspec", "~> 3.7"
+  gem "chefstyle"
   gem "cucumber"
   gem "rake"
+  gem "rspec", "~> 3.7"
 end
 
-group :development do
+group :debug do
   gem "pry"
   gem "pry-byebug"
   gem "pry-stack_explorer"
diff --git a/README.md b/README.md
index 1641158..bf0a770 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # Mixlib::Log
 
 [![Gem Version](https://badge.fury.io/rb/mixlib-log.svg)](https://badge.fury.io/rb/mixlib-log)
+[![Build status](https://badge.buildkite.com/cb1e5b6f3cc77071f4b2315f6b605fe60d86e2862a490873d4.svg?branch=master)](https://buildkite.com/chef-oss/chef-mixlib-log-master-verify)
 
 **Umbrella Project**: [Chef Foundation](https://github.com/chef/chef-oss-practices/blob/master/projects/chef-foundation.md)
 
diff --git a/Rakefile b/Rakefile
index 1b9ec9a..5442c99 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,28 +1,41 @@
-require "bundler/gem_tasks"
-require "rspec/core/rake_task"
-require "cucumber/rake/task"
+require "bundler"
 
-task default: [:style, :spec, :features]
-
-Bundler::GemHelper.install_tasks
+begin
+  require "cucumber/rake/task"
 
-desc "Run specs"
-RSpec::Core::RakeTask.new(:spec) do |spec|
-  spec.pattern = "spec/**/*_spec.rb"
+  Cucumber::Rake::Task.new(:features) do |t|
+    t.cucumber_opts = "--format pretty"
+    t.bundler = false
+  end
+rescue LoadError
+  desc "cucumber is not installed, this task is disabled"
+  task :spec do
+    abort "cucumber is not installed. bundle install first to make sure all dependencies are installed."
+  end
 end
 
-Cucumber::Rake::Task.new(:features) do |t|
-  t.cucumber_opts = "--format pretty"
+begin
+  require "rspec/core/rake_task"
+
+  RSpec::Core::RakeTask.new do |t|
+    t.pattern = "spec/**/*_spec.rb"
+  end
+rescue LoadError
+  desc "rspec is not installed, this task is disabled"
+  task :spec do
+    abort "rspec is not installed. bundle install first to make sure all dependencies are installed."
+  end
 end
 
 begin
   require "chefstyle"
   require "rubocop/rake_task"
+  desc "Run Chefstyle tests"
   RuboCop::RakeTask.new(:style) do |task|
     task.options += ["--display-cop-names", "--no-color"]
   end
 rescue LoadError
-  puts "chefstyle/rubocop is not available. bundle install first to make sure all dependencies are installed."
+  puts "chefstyle gem is not installed. bundle install first to make sure all dependencies are installed."
 end
 
 begin
@@ -39,3 +52,5 @@ task :console do
   ARGV.clear
   IRB.start
 end
+
+task default: %i{style spec features}
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index 023ea09..0000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,43 +0,0 @@
-version: "master-{build}"
-
-os: Visual Studio 2017
-platform:
-  - x64
-
-cache:
-  - vendor/bundle
-
-environment:
-  matrix:
-    - ruby_version: "24-x64"
-    - ruby_version: "25-x64"
-    - ruby_version: "26-x64"
-
-clone_depth: 1
-skip_tags: true
-skip_branch_with_pr: true
-branches:
-  only:
-    - master
-
-install:
-  - systeminfo
-  - SET PATH=C:\Ruby%ruby_version%\bin;%PATH%
-  - echo %PATH%
-  - appveyor DownloadFile http://curl.haxx.se/ca/cacert.pem -FileName C:\cacert.pem
-  - set SSL_CERT_FILE=C:\cacert.pem
-  - SET BUNDLE_WITHOUT=server:docgen:maintenance:pry:travis:integration:ci
-  - bundle config --local path vendor/bundle # use the cache we define above
-  - bundle install || bundle install || bundle install
-
-build: off
-
-before_test:
-  - ruby --version
-  - gem --version
-  - bundler --version
-  - bundle env
-
-test_script:
-  - SET SPEC_OPTS=--format progress
-  - bundle exec rake
\ No newline at end of file
diff --git a/lib/mixlib/log.rb b/lib/mixlib/log.rb
index e57ffcd..d15663c 100644
--- a/lib/mixlib/log.rb
+++ b/lib/mixlib/log.rb
@@ -61,7 +61,7 @@ def use_log_devices(other)
       if other.respond_to?(:loggers) && other.respond_to?(:logger)
         @loggers = other.loggers
         @logger = other.logger
-      elsif other.kind_of?(Array)
+      elsif other.is_a?(Array)
         @loggers = other
         @logger = other.first
       else
@@ -82,7 +82,7 @@ def use_log_devices(other)
     def init(*opts)
       reset!
       @logger = logger_for(*opts)
-      @logger.formatter = Mixlib::Log::Formatter.new() if @logger.respond_to?(:formatter=)
+      @logger.formatter = Mixlib::Log::Formatter.new if @logger.respond_to?(:formatter=)
       @logger.level = Logger::WARN
       @configured = true
       @parent = nil
@@ -110,6 +110,7 @@ def configured?
     def level=(new_level)
       level_int = LEVEL_NAMES.key?(new_level) ? new_level : LEVELS[new_level]
       raise ArgumentError, "Log level must be one of :trace, :debug, :info, :warn, :error, or :fatal" if level_int.nil?
+
       loggers.each { |l| l.level = level_int }
     end
 
@@ -125,7 +126,7 @@ def level(new_level = nil)
     # Note that we *only* query the default logger (@logger) and not any other
     # loggers that may have been added, even though it is possible to configure
     # two (or more) loggers at different log levels.
-    [:trace?, :debug?, :info?, :warn?, :error?, :fatal?].each do |method_name|
+    %i{trace? debug? info? warn? error? fatal?}.each do |method_name|
       define_method(method_name) do
         logger.send(method_name)
       end
@@ -137,7 +138,7 @@ def <<(msg)
 
     def add(severity, message = nil, progname = nil, data: {}, &block)
       message, progname, data = yield if block_given?
-      data = metadata.merge(data) if metadata.kind_of?(Hash) && data.kind_of?(Hash)
+      data = metadata.merge(data) if metadata.is_a?(Hash) && data.is_a?(Hash)
       loggers.each do |l|
         # if we don't have any metadata, let's not do the potentially expensive
         # merging and managing that this call requires
@@ -193,6 +194,7 @@ def loggers_to_close
         # to get access to it.
         next unless logger.instance_variable_defined?(:"@logdev")
         next unless (logdev = logger.instance_variable_get(:"@logdev"))
+
         loggers_to_close << logger if logdev.filename
       end
       loggers_to_close
diff --git a/lib/mixlib/log/child.rb b/lib/mixlib/log/child.rb
index 56376c5..2d7de00 100644
--- a/lib/mixlib/log/child.rb
+++ b/lib/mixlib/log/child.rb
@@ -36,14 +36,14 @@ def level
       # Note that we *only* query the default logger (@logger) and not any other
       # loggers that may have been added, even though it is possible to configure
       # two (or more) loggers at different log levels.
-      [:trace?, :debug?, :info?, :warn?, :error?, :fatal?].each do |method_name|
+      %i{trace? debug? info? warn? error? fatal?}.each do |method_name|
         define_method(method_name) do
           parent.send(method_name)
         end
       end
 
       def add(severity, message = nil, progname = nil, data: {}, &block)
-        data = metadata.merge(data) if data.kind_of?(Hash)
+        data = metadata.merge(data) if data.is_a?(Hash)
         parent.send(:pass, severity, message, progname, data: data, &block)
       end
 
diff --git a/lib/mixlib/log/formatter.rb b/lib/mixlib/log/formatter.rb
index 1727452..680836f 100644
--- a/lib/mixlib/log/formatter.rb
+++ b/lib/mixlib/log/formatter.rb
@@ -31,7 +31,7 @@ def self.show_time=(show = false)
       # Otherwise, doesn't print the time.
       def call(severity, time, progname, msg)
         if @@show_time
-          sprintf("[%s] %s: %s\n", time.iso8601(), severity, msg2str(msg))
+          sprintf("[%s] %s: %s\n", time.iso8601, severity, msg2str(msg))
         else
           sprintf("%s: %s\n", severity, msg2str(msg))
         end
diff --git a/lib/mixlib/log/logger.rb b/lib/mixlib/log/logger.rb
index f227f23..e1f8929 100644
--- a/lib/mixlib/log/logger.rb
+++ b/lib/mixlib/log/logger.rb
@@ -45,14 +45,16 @@ def initialize(logdev)
 
       def add_data(severity, message, progname, data: {})
         return true if @logdev.nil? || severity < @level
+
         data ||= {}
-        if message.kind_of?(::Exception)
+        if message.is_a?(::Exception)
           data[:err] = message
         else
           data[:msg] = message
         end
         @logdev.write(
-          format_message(to_label(severity), Time.now, progname, data))
+          format_message(to_label(severity), Time.now, progname, data)
+        )
         true
       end
       alias_method :add, :add_data
diff --git a/lib/mixlib/log/logging.rb b/lib/mixlib/log/logging.rb
index 524900b..5a7a076 100644
--- a/lib/mixlib/log/logging.rb
+++ b/lib/mixlib/log/logging.rb
@@ -41,7 +41,7 @@ def pass(severity, args, progname = nil, data: {}, &block)
 
       # Define the standard logger methods on this class programmatically.
       # No need to incur method_missing overhead on every log call.
-      [:trace, :debug, :info, :warn, :error, :fatal].each do |method_name|
+      %i{trace debug info warn error fatal}.each do |method_name|
         level = LEVELS[method_name]
         define_method(method_name) do |msg = nil, data: {}, &block|
           pass(level, msg, data: data, &block)
diff --git a/spec/mixlib/log_spec.rb b/spec/mixlib/log_spec.rb
index b58c4e2..5366dcd 100644
--- a/spec/mixlib/log_spec.rb
+++ b/spec/mixlib/log_spec.rb
@@ -38,7 +38,7 @@ def add(severity, message = nil, progname = nil, data: {})
     @messages << message
   end
 
-  [:trace, :debug, :info, :warn, :error, :fatal].each do |method_name|
+  %i{trace debug info warn error fatal}.each do |method_name|
     class_eval(<<-E)
       def #{method_name}(message)
         @messages << message
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index a2de3b9..e8a1bb1 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -24,9 +24,7 @@
 require "mixlib/log"
 require "mixlib/log/formatter"
 
-RSpec.configure do |config|
-  config.disable_monkey_patching!
-end
+RSpec.configure(&:disable_monkey_patching!)
 
 class Logit
   extend Mixlib::Log