Gemfile in mongoid_find_by-0.1.1 vs Gemfile in mongoid_find_by-0.1.2

@@ -1,10 +1,10 @@
 source 'http://rubygems.org'
 
-gem 'mongoid', '~> 2.4.7'
+gem 'mongoid', '>= 2.4.7'
 
 group :development do
-  gem 'redcarpet', '~> 2.1.0'
-  gem 'yard', '~> 0.7.5'
-  gem 'jeweler', '~> 1.8.3'
+  gem 'rspec', '>= 2.13.0'
+  gem 'yard', '>= 0.7.5'
+  gem 'jeweler', '>= 1.8.3'
 end