diff --git a/angular-ui-bootstrap/angular-ui-bootstrap-tests.ts b/angular-ui-bootstrap/angular-ui-bootstrap-tests.ts
index 5aadee3f3e..f685a83ff7 100644
--- a/angular-ui-bootstrap/angular-ui-bootstrap-tests.ts
+++ b/angular-ui-bootstrap/angular-ui-bootstrap-tests.ts
@@ -121,11 +121,12 @@ testApp.controller('TestCtrl', (
     $scope: ng.IScope,
     $log: ng.ILogService,
     $modal: ng.ui.bootstrap.IModalService,
+    $modalStack: ng.ui.bootstrap.IModalStackService,
     $position: ng.ui.bootstrap.IPositionService,
     $transition: ng.ui.bootstrap.ITransitionService)=> {
 
     /**
-     * test the $modal instance
+     * test the $modal service
      */
     var modalInstance = $modal.open({
         backdrop: 'static',
@@ -153,6 +154,17 @@ testApp.controller('TestCtrl', (
     });
 
 
+    /**
+     * test the $modalStack service
+     */
+    $modalStack.open(modalInstance, { scope: $scope });
+    $modalStack.close(modalInstance);
+    $modalStack.close(modalInstance, 'with reason');
+    $modalStack.dismiss(modalInstance);
+    $modalStack.dismiss(modalInstance, 'with reason');
+    $modalStack.getTop().key.close();
+
+
     /**
      * test the $position service
      */
diff --git a/angular-ui-bootstrap/angular-ui-bootstrap.d.ts b/angular-ui-bootstrap/angular-ui-bootstrap.d.ts
index d9c57cdc21..44ac9cb146 100644
--- a/angular-ui-bootstrap/angular-ui-bootstrap.d.ts
+++ b/angular-ui-bootstrap/angular-ui-bootstrap.d.ts
@@ -248,6 +248,33 @@ declare module ng.ui.bootstrap {
         windowClass?: string;
     }
 
+    interface IModalStackService {
+        /**
+         * Opens a new modal instance.
+         */
+        open(modalInstance: IModalServiceInstance, modal: any): void;
+
+        /**
+         * Closes a modal instance with an optional result.
+         */
+        close(modalInstance: IModalServiceInstance, result?: any): void;
+
+        /**
+         * Dismisses a modal instance with an optional reason.
+         */
+        dismiss(modalInstance: IModalServiceInstance, reason?: any): void;
+
+        /**
+         * Gets the topmost modal instance that is open.
+         */
+        getTop(): IModalStackedMapKeyValuePair;
+    }
+
+    interface IModalStackedMapKeyValuePair {
+        key: IModalServiceInstance;
+        value: any;
+    }
+
 
     interface IPaginationConfig {
         /**