Gemfile in mongoid-history-0.2.3 vs Gemfile in mongoid-history-0.2.4

@@ -1,10 +1,10 @@
 source "http://rubygems.org"
 
 gem "easy_diff"
 gem "mongoid", ">= 2.0.0"
 
-group :development do
+group :test do
   gem "bson_ext"
   gem "rspec"
   gem "yard"
   gem "bundler", ">= 1.0.0"
   gem "jeweler"