diff --git a/README.md b/README.md
index 00fd2e162..77813d743 100644
--- a/README.md
+++ b/README.md
@@ -53,7 +53,7 @@ InversifyJS has been developed with 4 main goals:
 You can get the latest release and the type definitions using npm:
 
 ```
-npm install inversify@2.0.0-beta.10 reflect-metadata --save
+npm install inversify@2.0.0-rc.1 reflect-metadata --save
 npm install inversify-dts --save-dev
 ```
 
diff --git a/package.json b/package.json
index e37f854f8..afd6b615e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "inversify",
-  "version": "2.0.0-beta.10",
+  "version": "2.0.0-rc.1",
   "description": "A lightweight IoC container written in TypeScript.",
   "main": "lib/inversify.js",
   "jsnext:main": "es/inversify.js",
diff --git a/src/interfaces/interfaces.ts b/src/interfaces/interfaces.ts
index 5d97d6ac7..1879fb49a 100644
--- a/src/interfaces/interfaces.ts
+++ b/src/interfaces/interfaces.ts
@@ -169,6 +169,7 @@ namespace interfaces {
     export interface KeyValuePair<T> {
         serviceIdentifier: ServiceIdentifier<any>;
         value: Array<T>;
+        guid: string;
     }
 
     export interface BindingInSyntax<T> {
diff --git a/src/inversify.ts b/src/inversify.ts
index c56b8a749..bcfb86567 100644
--- a/src/inversify.ts
+++ b/src/inversify.ts
@@ -13,6 +13,7 @@ import multiInject from "./annotation/multi_inject";
 import targetName from "./annotation/target_name";
 import { decorate } from "./annotation/decorator_utils";
 import { traverseAncerstors, taggedConstraint, namedConstraint, typeConstraint } from "./syntax/constraint_helpers";
+import guid from "./utils/guid";
 import {
     makePropertyInjectDecorator,
     makePropertyMultiInjectDecorator,
@@ -37,3 +38,4 @@ export { traverseAncerstors };
 export { taggedConstraint };
 export { namedConstraint };
 export { typeConstraint };
+export { guid };
diff --git a/src/kernel/key_value_pair.ts b/src/kernel/key_value_pair.ts
index 909f71a41..f76b42acb 100644
--- a/src/kernel/key_value_pair.ts
+++ b/src/kernel/key_value_pair.ts
@@ -1,14 +1,17 @@
 import interfaces from "../interfaces/interfaces";
+import guid from "../utils/guid";
 
 class KeyValuePair<T> implements interfaces.KeyValuePair<T> {
 
     public serviceIdentifier: (string|Symbol|any);
     public value: Array<T>;
+    public guid: string;
 
     public constructor(serviceIdentifier: (string|Symbol|any), value: T) {
         this.serviceIdentifier = serviceIdentifier;
         this.value = new Array<T>();
         this.value.push(value);
+        this.guid = guid();
     }
 }
 
diff --git a/test/kernel/key_value_pair.test.ts b/test/kernel/key_value_pair.test.ts
index afe47b9d3..d10bb5f6a 100644
--- a/test/kernel/key_value_pair.test.ts
+++ b/test/kernel/key_value_pair.test.ts
@@ -9,6 +9,7 @@ describe("KeyValuePair", () => {
         expect(keyValuePair.serviceIdentifier).eql("test");
         expect(keyValuePair.value.length).eql(1);
         expect(keyValuePair.value[0]).eql(1);
+        expect(keyValuePair.guid.length).eql(36);
 
     });