rails_4.0.gemfile in groupify-0.7.0

- old
+ new

@@ -20,10 +20,10 @@
   gem "activerecord-jdbcpostgresql-adapter"
 end
 
 platforms :ruby do
   gem "sqlite3"
-  gem "mysql2"
+  gem "mysql2", "~> 0.3.11"
   gem "pg"
 end
 
 gemspec :path => "../"