Gemfile in mongoid-history-0.3.1 vs Gemfile in mongoid-history-0.3.2

@@ -1,8 +1,9 @@
 source "http://rubygems.org"
 
 gem "easy_diff"
-gem "mongoid", "~> 3.0.4"
+gem "mongoid", "~> 3.0"
+gem "activesupport"
 
 group :test do
   gem "rspec", "~> 2.11.0"
   gem "yard"
   gem "bundler", ">= 1.0.0"