Gemfile in ruby-nmap-0.7.0 vs Gemfile in ruby-nmap-0.8.0

@@ -1,12 +1,14 @@
 source 'https://rubygems.org'
 
 gemspec
 
 group :development do
-  gem 'rake',           '~> 10.0'
-  gem 'rubygems-tasks', '~> 0.1'
-  gem 'rspec',          '~> 2.4'
+  gem 'rake'
+  gem 'rubygems-tasks', '~> 0.2'
+  gem 'rspec',          '~> 3.0'
+
+  gem 'json'
   gem 'simplecov',      '~> 0.7'
-  gem 'kramdown',       '~> 1.0'
-  gem 'yard',           '~> 0.7'
+  gem 'kramdown'
+  gem 'yard',           '~> 0.8'
 end