diff --git a/modules/@angular/upgrade/src/angular_js.ts b/modules/@angular/upgrade/src/angular_js.ts
index 02d6fd6d31b8f..eeb3782bddb48 100644
--- a/modules/@angular/upgrade/src/angular_js.ts
+++ b/modules/@angular/upgrade/src/angular_js.ts
@@ -26,6 +26,7 @@ export interface IRootScopeService {
   $apply(): any;
   $apply(exp: string): any;
   $apply(exp: Function): any;
+  $applyAsync(): any;
   $$childTail: IScope;
   $$childHead: IScope;
   $$nextSibling: IScope;
diff --git a/modules/@angular/upgrade/src/upgrade_adapter.ts b/modules/@angular/upgrade/src/upgrade_adapter.ts
index 6f93bb039a1eb..522574c6d4c09 100644
--- a/modules/@angular/upgrade/src/upgrade_adapter.ts
+++ b/modules/@angular/upgrade/src/upgrade_adapter.ts
@@ -366,7 +366,7 @@ export class UpgradeAdapter {
         (injector: angular.IInjectorService, rootScope: angular.IRootScopeService) => {
           ng1Injector = injector;
           ngZone.onMicrotaskEmpty.subscribe(
-              {next: (_) => ngZone.runOutsideAngular(() => rootScope.$apply())});
+              {next: (_) => ngZone.runOutsideAngular(() => rootScope.$applyAsync())});
           UpgradeNg1ComponentAdapterBuilder.resolve(this.downgradedComponents, injector)
               .then(resolve, reject);
         }