diff --git a/Gemfile b/Gemfile
index 51406c6..b0492ed 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ gem 'gravatar_image_tag', '0.1.0'
 
 group :development do
   gem 'rspec-rails', '2.0.0.beta.18'
-  gem 'annotate-models'
+  gem 'annotate-models', '1.0.4'
 end
 
 group :test do
diff --git a/db/migrate/20100822012431_add_email_uniqueness_index.rb b/db/migrate/20100822012431_add_email_uniqueness_index.rb
deleted file mode 100644
index 95c5122..0000000
--- a/db/migrate/20100822012431_add_email_uniqueness_index.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-class AddEmailUniquenessIndex < ActiveRecord::Migration
-  def self.up
-    add_index :users, :email, :unique => true
-  end
-
-  def self.down
-    remove_index :users, :email
-  end
-end