diff --git a/packages/tray_manager/lib/src/tray_manager.dart b/packages/tray_manager/lib/src/tray_manager.dart
index d9d6a66..ed8b6e4 100644
--- a/packages/tray_manager/lib/src/tray_manager.dart
+++ b/packages/tray_manager/lib/src/tray_manager.dart
@@ -107,6 +107,7 @@ class TrayManager {
     String iconPath, {
     bool isTemplate = false, // macOS only
     TrayIconPositon iconPosition = TrayIconPositon.left, // macOS only
+    int iconSize = 18, // macOS only
   }) async {
     final Map<String, dynamic> arguments = {
       'id': shortid.generate(),
@@ -117,6 +118,7 @@ class TrayManager {
       ]),
       'isTemplate': isTemplate,
       'iconPosition': iconPosition.name,
+      'iconSize': iconSize,
     };
 
     switch (defaultTargetPlatform) {
diff --git a/packages/tray_manager/macos/Classes/TrayManagerPlugin.swift b/packages/tray_manager/macos/Classes/TrayManagerPlugin.swift
index 934d92e..731da79 100644
--- a/packages/tray_manager/macos/Classes/TrayManagerPlugin.swift
+++ b/packages/tray_manager/macos/Classes/TrayManagerPlugin.swift
@@ -135,10 +135,11 @@ public class TrayManagerPlugin: NSObject, FlutterPlugin, NSMenuDelegate {
         let base64Icon: String =  args["base64Icon"] as! String;
         let isTemplate: Bool =  args["isTemplate"] as! Bool;
         let iconPosition: String =  args["iconPosition"] as! String;
+        let iconSize: Int = args["iconSize"] as! Int;
         
         let imageData = Data(base64Encoded: base64Icon, options: .ignoreUnknownCharacters)
         let image = NSImage(data: imageData!)
-        image!.size = NSSize(width: 18, height: 18)
+        image!.size = NSSize(width: iconSize, height: iconSize)
         image!.isTemplate = isTemplate
         
         if (trayIcon == nil) {