diff --git a/rails-trash.gemspec b/rails-trash.gemspec
index a096d75..08f2cfa 100644
--- a/rails-trash.gemspec
+++ b/rails-trash.gemspec
@@ -1,12 +1,12 @@
 Gem::Specification.new do |s|
   s.name = 'rails-trash'
-  s.version = '3.0.0'
+  s.version = '4.0.0'
   s.author = 'Francesc Esplugas'
   s.email = 'contact@francescesplugas.com'
   s.homepage = 'https://github.com/fesplugas/rails-trash'
   s.summary = 'Trash'
 
-  s.add_dependency('rails', '>= 3.2.12')
+  s.add_dependency('rails', '>= 4.0.1')
 
   s.add_development_dependency("factory_girl", "~> 4.2.0")
   s.add_development_dependency("sqlite3", "~> 1.3.7")
diff --git a/test/rails-trash_test.rb b/test/rails-trash_test.rb
index bfdc4c7..b336f6b 100644
--- a/test/rails-trash_test.rb
+++ b/test/rails-trash_test.rb
@@ -1,14 +1,3 @@
-module Rails
-  module VERSION
-    MAJOR = 3
-    MINOR = 1
-    TINY  = 0
-    PRE   = "rc1"
-
-    STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.')
-  end
-end
-
 require 'test/unit'
 require 'rubygems'
 require 'active_record'
@@ -56,7 +45,7 @@ class Site < ActiveRecord::Base
 
 class Entry < ActiveRecord::Base
   include Rails::Trash
-  default_scope where(arel_table[:deleted_at].eq(nil)) if arel_table[:deleted_at]
+  default_scope { where(arel_table[:deleted_at].eq(nil)) } if arel_table[:deleted_at]
 
   belongs_to :site
   has_many :comments, :dependent => :destroy
@@ -64,7 +53,7 @@ class Entry < ActiveRecord::Base
 
 class Comment < ActiveRecord::Base
   include Rails::Trash
-  default_scope where(arel_table[:deleted_at].eq(nil)) if arel_table[:deleted_at]
+  default_scope { where(arel_table[:deleted_at].eq(nil)) } if arel_table[:deleted_at]
   belongs_to :entry
 end