--- a/electron.old.d.ts
+++ b/electron.new.d.ts
@@ -10467,6 +10467,36 @@ declare namespace Electron {
                                        * the dropped text string.
                                        */
                                       text: string) => void): this;
+    /**
+     * Emitted when the tray icon is middle clicked.
+     *
+     * @platform win32
+     */
+    on(event: 'middle-click', listener: (event: KeyboardEvent,
+                                         /**
+                                          * The bounds of tray icon.
+                                          */
+                                         bounds: Rectangle) => void): this;
+    off(event: 'middle-click', listener: (event: KeyboardEvent,
+                                         /**
+                                          * The bounds of tray icon.
+                                          */
+                                         bounds: Rectangle) => void): this;
+    once(event: 'middle-click', listener: (event: KeyboardEvent,
+                                         /**
+                                          * The bounds of tray icon.
+                                          */
+                                         bounds: Rectangle) => void): this;
+    addListener(event: 'middle-click', listener: (event: KeyboardEvent,
+                                         /**
+                                          * The bounds of tray icon.
+                                          */
+                                         bounds: Rectangle) => void): this;
+    removeListener(event: 'middle-click', listener: (event: KeyboardEvent,
+                                         /**
+                                          * The bounds of tray icon.
+                                          */
+                                         bounds: Rectangle) => void): this;
     /**
      * Emitted when the mouse clicks the tray icon.
      *