diff --git a/Definitions/knockout-2.1.d.ts b/Definitions/knockout-2.2.d.ts
similarity index 100%
rename from Definitions/knockout-2.1.d.ts
rename to Definitions/knockout-2.2.d.ts
diff --git a/Definitions/knockoutmapping-2.0.d.ts b/Definitions/knockoutmapping-2.0.d.ts
new file mode 100644
index 000000000..2b3b412f9
--- /dev/null
+++ b/Definitions/knockoutmapping-2.0.d.ts
@@ -0,0 +1,29 @@
+// Type definitions for Knockout.Mapping 2.0
+// Project: https://github.com/SteveSanderson/knockout.mapping
+// https://github.com/borisyankov/DefinitelyTyped
+
+interface KnockoutMappingOptions {
+    ignore;
+    include;
+    copy;
+    mappedProperties;
+    deferEvaluation;
+}
+
+interface KnockoutMapping {
+    isMapped(viewModel: any): bool;
+    fromJS(jsObject: any): any;
+    fromJS(jsObject: any, targetOrOptions: any): any;
+    fromJS(jsObject: any, inputOptions: any, target: any): any;
+    fromJSON(jsonString: string): any;
+    toJS(rootObject: any, options?: KnockoutMappingOptions): any;
+    toJSON(rootObject: any, options?: KnockoutMappingOptions): any;
+    defaultOptions(): KnockoutMappingOptions;
+    resetDefaultOptions(): void;
+    getType(x: any): any;
+    visitModel(rootObject: any, callback: Function, options?: { visitedObjects?; parentName?; ignore?; copy?; include?; } ): any;
+}
+
+interface KnockoutStatic {
+    mapping: KnockoutMapping;
+}
\ No newline at end of file
diff --git a/README.md b/README.md
index 96045e042..46fec6a23 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,7 @@ Complete
 * [jQuery Mobile](http://jquerymobile.com)
 * [jQuery UI](http://jqueryui.com/)
 * [Knockout.js](http://knockoutjs.com/)
+* [Knockout.Mapping](https://github.com/SteveSanderson/knockout.mapping)
 * [Modernizr](http://modernizr.com/)
 * [Moment.js](https://github.com/timrwood/moment) (by [Michael Lakerveld](https://github.com/Lakerfield))
 * [Mustache.js](https://github.com/janl/mustache.js)
@@ -37,7 +38,6 @@ Complete
 
 Next
 ----
-* Knockout.Mapping
 * Chosen
 * Facebook SDK
 * jQuery.Validate