diff --git a/history.md b/history.md
index a6b7133..550f920 100644
--- a/history.md
+++ b/history.md
@@ -1,5 +1,15 @@
 # CouchRest Model Change History
 
+## 1.1.0 - 2011-05-XX
+
+* Minor fixes
+  * #as_json now correctly uses ActiveSupports methods.
+  * nil properties are now no longer sent in the document body.
+  * Rails 3.1 support (Peter Williams)
+  * Initialization blocks when creating new models (Peter Williams)
+  * Removed railties dependency (DAddYE)
+
+
 ## 1.1.0.beta5 - 2011-04-30
 
 * Major changes:
diff --git a/lib/couchrest/model/properties.rb b/lib/couchrest/model/properties.rb
index 229c5bc..f421adf 100644
--- a/lib/couchrest/model/properties.rb
+++ b/lib/couchrest/model/properties.rb
@@ -12,6 +12,10 @@ module CouchRest
         raise "You can only mixin Properties in a class responding to [] and []=, if you tried to mixin CastedModel, make sure your class inherits from Hash or responds to the proper methods" unless (method_defined?(:[]) && method_defined?(:[]=))
       end
 
+      def as_json(options = nil)
+        Hash[self].reject{|k,v| v.nil?}.as_json(options)
+      end
+
       # Returns the Class properties
       #
       # ==== Returns
diff --git a/spec/couchrest/property_spec.rb b/spec/couchrest/property_spec.rb
index 6acc2f0..08ea325 100644
--- a/spec/couchrest/property_spec.rb
+++ b/spec/couchrest/property_spec.rb
@@ -1,5 +1,6 @@
 # encoding: utf-8
 require File.expand_path('../../spec_helper', __FILE__)
+require File.join(FIXTURE_PATH, 'more', 'article')
 require File.join(FIXTURE_PATH, 'more', 'cat')
 require File.join(FIXTURE_PATH, 'more', 'person')
 require File.join(FIXTURE_PATH, 'more', 'card')
@@ -71,6 +72,24 @@ describe "Model properties" do
     @card.updated_at.should_not be_nil
   end
 
+  describe "#as_json" do
+
+    it "should provide a simple hash from model" do
+      @card.as_json.class.should eql(Hash)
+    end
+
+    it "should remove properties from Hash if value is nil" do
+      @card.last_name = nil
+      @card.as_json.keys.include?('last_name').should be_false
+    end
+
+    it "should pass options to Active Support's as_json" do
+      @card.last_name = "Aimonetti"
+      @card.as_json(:only => 'last_name').should eql('last_name' => 'Aimonetti')
+    end
+
+  end
+
   describe '#read_attribute' do
     it "should let you use read_attribute method" do
       @card.last_name = "Aimonetti"