diff --git a/github-electron/github-electron-main-tests.ts b/github-electron/github-electron-main-tests.ts
index 568938d405..0b9c20c267 100644
--- a/github-electron/github-electron-main-tests.ts
+++ b/github-electron/github-electron-main-tests.ts
@@ -505,6 +505,19 @@ app.on('ready', () => {
 	appIcon.setToolTip('This is my application.');
 	appIcon.setContextMenu(contextMenu);
 	appIcon.setImage('/path/to/new/icon');
+    appIcon.popUpContextMenu(contextMenu, {x: 100, y: 100});
+
+	appIcon.on('click', (event, bounds) => {
+		console.log('click', event, bounds);
+	});
+
+	appIcon.on('ballon-show', () => {
+		console.log('ballon-show');
+	});
+
+	appIcon.displayBalloon({
+		title: 'Hello World!'
+	});
 });
 
 // clipboard
diff --git a/github-electron/github-electron.tray.d.ts b/github-electron/github-electron.tray.d.ts
index bf2d0a881c..0cbad09a5e 100644
--- a/github-electron/github-electron.tray.d.ts
+++ b/github-electron/github-electron.tray.d.ts
@@ -6,10 +6,69 @@
 /// <reference path="github-electron.event-emitter.d.ts" />
 /// <reference path="github-electron.menu.d.ts" />
 /// <reference path="github-electron.native-image.d.ts" />
+/// <reference path="github-electron.screen.d.ts" />
 
 declare namespace Electron {
-
+    /**
+     * A Tray represents an icon in an operating system's notification area.
+     */
 	class Tray extends EventEmitter {
+		/**
+		 * Emitted when the tray icon is clicked.
+		 * Note: The bounds payload is only implemented on OS X and Windows.
+		 */
+		on(event: 'click', listener: (modifiers: Modifiers, bounds: Bounds) => void): this;
+		/**
+		 * Emitted when the tray icon is right clicked.
+         * Note: This is only implemented on OS X and Windows.
+		 */
+		on(event: 'right-click', listener: (modifiers: Modifiers, bounds: Bounds) => void): this;
+		/**
+		 * Emitted when the tray icon is double clicked.
+		 * Note: This is only implemented on OS X and Windows.
+		 */
+		on(event: 'double-click', listener: (modifiers: Modifiers, bounds: Bounds) => void): this;
+		/**
+		 * Emitted when the tray balloon shows.
+		 * Note: This is only implemented on Windows.
+		 */
+		on(event: 'balloon-show', listener: Function): this;
+		/**
+		 * Emitted when the tray balloon is clicked.
+		 * Note: This is only implemented on Windows.
+		 */
+		on(event: 'balloon-click', listener: Function): this;
+		/**
+		 * Emitted when the tray balloon is closed because of timeout or user manually closes it.
+		 * Note: This is only implemented on Windows.
+		 */
+		on(event: 'balloon-closed', listener: Function): this;
+		/**
+		 * Emitted when any dragged items are dropped on the tray icon.
+		 * Note: This is only implemented on OS X.
+		 */
+		on(event: 'drop', listener: Function): this;
+		/**
+		 * Emitted when dragged files are dropped in the tray icon.
+		 * Note: This is only implemented on OS X
+		 */
+		on(event: 'drop-files', listener: (event: Event, files: string[]) => void): this;
+		/**
+		 * Emitted when a drag operation enters the tray icon.
+		 * Note: This is only implemented on OS X
+		 */
+		on(event: 'drag-enter', listener: Function): this;
+		/**
+		 * Emitted when a drag operation exits the tray icon.
+		 * Note: This is only implemented on OS X
+		 */
+		on(event: 'drag-leave', listener: Function): this;
+		/**
+		 * Emitted when a drag operation ends on the tray or ends at another location.
+		 * Note: This is only implemented on OS X
+		 */
+		on(event: 'drag-end', listener: Function): this;
+		on(event: string, listener: Function): this;
 		/**
 		 * Creates a new tray icon associated with the image.
 		 */
@@ -49,9 +108,26 @@ declare namespace Electron {
 			title?: string;
 			content?: string;
 		}): void;
+        /**
+         * Popups the context menu of tray icon. When menu is passed,
+         * the menu will showed instead of the tray's context menu.
+         * The position is only available on Windows, and it is (0, 0) by default.
+         * Note: This is only implemented on OS X and Windows.
+         */
+        popUpContextMenu(menu?: Menu, position?: {
+           x: number;
+           y: number;
+        }): void;
 		/**
 		 * Sets the context menu for this icon.
 		 */
 		setContextMenu(menu: Menu): void;
 	}
+
+	interface Modifiers {
+		altKey: boolean;
+		shiftKey: boolean;
+		ctrlKey: boolean;
+		metaKey: boolean;
+	}
 }