Gemfile in devise_ldap_authenticatable-0.5.1 vs Gemfile in devise_ldap_authenticatable-0.6.0

@@ -1,9 +1,9 @@
 source "http://rubygems.org"
 
 gemspec
 
-gem 'devise', '~> 1.5.0'
+gem 'devise', '~> 2.0.0'
 gem 'net-ldap', '~> 0.2.2'
 
 platforms :mri_18 do
   group :test do
     gem 'ruby-debug', '>= 0.10.3'
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