diff --git a/angularjs/angular.d.ts b/angularjs/angular.d.ts
index 845476341..728c71fd3 100755
--- a/angularjs/angular.d.ts
+++ b/angularjs/angular.d.ts
@@ -236,6 +236,9 @@ declare module ng {
         $watchCollection(watchExpression: string, listener: (newValue: any, oldValue: any, scope: IScope) => any): Function;
         $watchCollection(watchExpression: (scope: IScope) => any, listener: (newValue: any, oldValue: any, scope: IScope) => any): Function;
 
+        $watchGroup(watchExpressions: string[], listener: (newValue: any, oldValue: any, scope: IScope) => any): Function;
+        $watchGroup(watchExpressions: {(scope: IScope) : any}[], listener: (newValue: any, oldValue: any, scope: IScope) => any): Function;
+
         $parent: IScope;
 
         $id: string;