Gemfile in index_shotgun-0.2.0 vs Gemfile in index_shotgun-0.2.1

@@ -2,10 +2,10 @@
 
 # Specify your gem's dependencies in index_shotgun.gemspec
 gemspec
 
 group :mysql do
-  gem "mysql2", "< 0.4.0"
+  gem "mysql2"
 end
 
 group :oracle do
   gem "activerecord-oracle_enhanced-adapter"
   gem "ruby-oci8"