Gemfile in PlayRockPaperScissorsGame-1.6.1 vs Gemfile in PlayRockPaperScissorsGame-1.6.2

@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
-ruby '2.0.0'
+ruby '~> 2.0.0'
 platform :ruby do
 	gemspec
 	group :test do
 		gem 'bundler' , '~> 1.14.6'  , :require => true
 		gem 'colorize', '~> 0.8.1'   , :require => true
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