diff --git a/Rakefile b/Rakefile
index 4c774a2..f5bbedb 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,6 +1,11 @@
-require 'bundler/gem_tasks'
+require 'bundler/setup'
+require 'rubygems/tasks'
+Gem::Tasks.new
+
 require 'rspec/core/rake_task'
+RSpec::Core::RakeTask.new
 
-RSpec::Core::RakeTask.new(:spec)
+require 'rubocop/rake_task'
+RuboCop::RakeTask.new
 
-task default: :spec
+task default: %w[spec rubocop]
diff --git a/colorls.gemspec b/colorls.gemspec
index 07b7ec9..9f7613f 100644
--- a/colorls.gemspec
+++ b/colorls.gemspec
@@ -30,4 +30,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rake'
   spec.add_development_dependency 'rspec'
   spec.add_development_dependency 'rubocop'
+  spec.add_development_dependency 'rubygems-tasks'
 end