Gemfile in riddle-1.5.4 vs Gemfile in riddle-1.5.5

@@ -1,6 +1,6 @@
 source 'http://rubygems.org'
 
 gemspec
 
-gem 'mysql2',     '0.3.2',    :platform => :ruby
-gem 'jdbc-mysql', '>= 5.1.13', :platform => :jruby
+gem 'mysql2',     '0.3.2',  :platform => :ruby
+gem 'jdbc-mysql', '5.1.13', :platform => :jruby