Gemfile in tdiary-contrib-4.0.2.1 vs Gemfile in tdiary-contrib-4.0.3

@@ -1,10 +1,10 @@
 source 'https://rubygems.org'
 
 gem 'tdiary', '4.0.2'
 
 gem 'rake'
-gem 'rspec'
+gem 'rspec', '~> 3.0.0.beta2'
 
 platforms :ruby_18 do
   gem 'json'
   gem 'rcov'
 end