Gemfile in dm-visualizer-0.2.2 vs Gemfile in dm-visualizer-0.2.3

@@ -1,11 +1,11 @@
-source :rubygems
+source 'https://rubygems.org/'
 
 gemspec
 
 group(:development) do
-  gem 'rake',         '~> 0.8'
+  gem 'rake',         '~> 10.0'
   gem 'kramdown',     '~> 0.12'
 
-  gem 'rubygems-tasks',	'~> 0.1'
+  gem 'rubygems-tasks',	'~> 0.2'
   gem 'rspec',          '~> 2.4'
 end