diff --git a/MTMR/BrightnessViewController.swift b/MTMR/BrightnessViewController.swift
index 043ba8a..ad9fab1 100644
--- a/MTMR/BrightnessViewController.swift
+++ b/MTMR/BrightnessViewController.swift
@@ -6,7 +6,7 @@ import CoreAudio
 class BrightnessViewController: NSCustomTouchBarItem {
     private(set) var sliderItem: NSSlider!
     
-    init(identifier: NSTouchBarItem.Identifier, image: NSImage? = nil) {
+    init(identifier: NSTouchBarItem.Identifier, refreshInterval: Double, image: NSImage? = nil) {
         super.init(identifier: identifier)
         let brightness:Double = Double(getBrightness())
         sliderItem = NSSlider(value: brightness*100.0, minValue: 0.0, maxValue: 100.0, target: self, action:#selector(BrightnessViewController.sliderValueChanged(_:)))
@@ -16,12 +16,21 @@ class BrightnessViewController: NSCustomTouchBarItem {
         }
         
         self.view = sliderItem
+        
+        let timer = Timer.scheduledTimer(timeInterval: refreshInterval, target: self, selector: #selector(BrightnessViewController.updateBrightnessSlider), userInfo: nil, repeats: true)
+        RunLoop.current.add(timer, forMode: RunLoopMode.commonModes)
     }
     
     required init?(coder: NSCoder) {
         fatalError("init(coder:) has not been implemented")
     }
     
+    @objc func updateBrightnessSlider() {
+        DispatchQueue.main.async {
+            self.sliderItem.floatValue = self.getBrightness() * 100
+        }
+    }
+    
     @objc func sliderValueChanged(_ sender: Any) {
         if let sliderItem = sender as? NSSlider {
             setBrightness(level: Float32(sliderItem.intValue)/100.0)
diff --git a/MTMR/ItemsParsing.swift b/MTMR/ItemsParsing.swift
index 888a790..1de608c 100644
--- a/MTMR/ItemsParsing.swift
+++ b/MTMR/ItemsParsing.swift
@@ -79,6 +79,12 @@ class SupportedTypesHolder {
             let item = ItemType.appleScriptTitledButton(source: Source(filePath: scriptPath), refreshInterval: interval ?? 1800.0)
             return (item: item, action: .none, parameters: [])
         },
+        "brightness": { decoder in
+            enum CodingKeys: String, CodingKey { case refreshInterval }
+            let container = try decoder.container(keyedBy: CodingKeys.self)
+            let interval = try container.decodeIfPresent(Double.self, forKey: .refreshInterval)
+            return (item: .brightness(refreshInterval: interval ?? 0.5), action: .none)
+        },
         "battery": { decoder in
             enum CodingKeys: String, CodingKey { case refreshInterval }
             let container = try decoder.container(keyedBy: CodingKeys.self)
@@ -116,7 +122,7 @@ enum ItemType: Decodable {
     case timeButton(formatTemplate: String)
     case flexSpace()
     case volume()
-    case brightness()
+    case brightness(refreshInterval: Double)
 
     private enum CodingKeys: String, CodingKey {
         case type
@@ -155,7 +161,8 @@ enum ItemType: Decodable {
         case .volume:
             self = .volume()
         case .brightness:
-            self = .brightness()
+            let interval = try container.decodeIfPresent(Double.self, forKey: .refreshInterval) ?? 0.5
+            self = .brightness(refreshInterval: interval)
         }
     }
 }
diff --git a/MTMR/TouchBarController.swift b/MTMR/TouchBarController.swift
index 0eee90d..6f6aa14 100644
--- a/MTMR/TouchBarController.swift
+++ b/MTMR/TouchBarController.swift
@@ -27,7 +27,7 @@ extension ItemType {
             return "NSTouchBarItem.Identifier.flexibleSpace"
         case .volume():
             return "com.toxblh.mtmr.volume"
-        case .brightness():
+        case .brightness(refreshInterval: _):
             return "com.toxblh.mtmr.brightness"
         }
     }
@@ -117,8 +117,8 @@ class TouchBarController: NSObject, NSTouchBarDelegate {
             barItem = nil
         case .volume:
             barItem = VolumeViewController(identifier: identifier)
-        case .brightness:
-            barItem = BrightnessViewController(identifier: identifier)
+        case .brightness(refreshInterval: let interval):
+            barItem = BrightnessViewController(identifier: identifier, refreshInterval: interval)
         }
         for parameter in item.additionalParameters {
             if case .width(let value) = parameter, let widthBarItem = barItem as? CanSetWidth {