diff --git a/Rakefile b/Rakefile
index 81fedb9..cddba63 100644
--- a/Rakefile
+++ b/Rakefile
@@ -46,7 +46,7 @@ task :flog do
   end
 end
 
-Rubocop::RakeTask.new do |task|
+RuboCop::RakeTask.new do |task|
   task.patterns = %w(lib/**/*.rb
                      spec/**/*.rb
                      Rakefile
diff --git a/json_cli.gemspec b/json_cli.gemspec
index 4e5ebc6..29ddb62 100644
--- a/json_cli.gemspec
+++ b/json_cli.gemspec
@@ -28,5 +28,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "flay"
   spec.add_development_dependency "flog"
   spec.add_development_dependency "reek"
-  spec.add_development_dependency "rubocop"
+  spec.add_development_dependency "rubocop", "~> 0.23"
 end