diff --git a/Gemfile b/Gemfile
index a8fa97f..bda5e3f 100755
--- a/Gemfile
+++ b/Gemfile
@@ -5,4 +5,5 @@ gemspec
 group :development do
   gem "bundler"
   gem "rdoc"
+  gem "rubocop", "~> 0.49.1"
 end
diff --git a/Rakefile b/Rakefile
index 4507bdd..40c218b 100644
--- a/Rakefile
+++ b/Rakefile
@@ -7,7 +7,7 @@ RSpec::Core::RakeTask.new(:spec) do |spec|
   spec.pattern = "spec/**/*_spec.rb"
 end
 
-task default: [:style, :spec, :features]
+task default: %i[style spec features]
 
 # For rubygems-test
 task test: :spec
diff --git a/lib/mixlib/log.rb b/lib/mixlib/log.rb
index ccbeded..fc4a332 100644
--- a/lib/mixlib/log.rb
+++ b/lib/mixlib/log.rb
@@ -115,7 +115,7 @@ def level(new_level = nil)
 
     # Define the standard logger methods on this class programmatically.
     # No need to incur method_missing overhead on every log call.
-    [:debug, :info, :warn, :error, :fatal].each do |method_name|
+    %i[debug info warn error fatal].each do |method_name|
       class_eval(<<-METHOD_DEFN, __FILE__, __LINE__)
         def #{method_name}(msg=nil, &block)
           loggers.each {|l| l.#{method_name}(msg, &block) }
@@ -127,7 +127,7 @@ def #{method_name}(msg=nil, &block)
     # 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.
-    [:debug?, :info?, :warn?, :error?, :fatal?].each do |method_name|
+    %i[debug? info? warn? error? fatal?].each do |method_name|
       class_eval(<<-METHOD_DEFN, __FILE__, __LINE__)
         def #{method_name}
           logger.#{method_name}
diff --git a/spec/mixlib/log_spec.rb b/spec/mixlib/log_spec.rb
index 8ff231a..1805da1 100644
--- a/spec/mixlib/log_spec.rb
+++ b/spec/mixlib/log_spec.rb
@@ -28,7 +28,7 @@ def initialize
     @messages = ""
   end
 
-  [:debug, :info, :warn, :error, :fatal].each do |method_name|
+  %i[debug info warn error fatal].each do |method_name|
     class_eval(<<-E)
       def #{method_name}(message)
         @messages << message