diff --git a/source/PA_Calculator.pro b/source/PA_Calculator.pro
index a138990..e971b4e 100644
--- a/source/PA_Calculator.pro
+++ b/source/PA_Calculator.pro
@@ -1,4 +1,4 @@
-QT       += core gui multimedia
+QT       += core gui multimedia network concurrent
 
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
diff --git a/source/mainwindow.cpp b/source/mainwindow.cpp
index fab8d4a..76727bf 100644
--- a/source/mainwindow.cpp
+++ b/source/mainwindow.cpp
@@ -10,12 +10,25 @@
 #include <QFileDialog>
 #include "about.h"
 #include "analyzer.h"
+#include <QJsonDocument>
+#include <Qfile>
+#include <QJsonParseError>
+#include <QJsonObject>
+#include <QJsonArray>
+#include <QDebug>
 
 MainWindow::MainWindow(QWidget *parent)
     : QMainWindow(parent)
     , ui(new Ui::MainWindow)
 {
     ui->setupUi(this);
+
+    manager = new QNetworkAccessManager();
+
+
+    checkUpdates();
+
+
     m_ampCount=0;
     m_pCAmp=Q_NULLPTR;
 
@@ -381,3 +394,37 @@ void MainWindow::on_checkBox_optimizeGain_stateChanged(int arg1)
     }
 }
 
+void MainWindow::checkUpdates()
+{
+    QObject::connect(manager, &QNetworkAccessManager::finished,
+        this,&MainWindow::checkUpdatesFinished);
+    request.setUrl(QUrl("https://git.aldiserver.de/api/v1/repos/DKM-Tech/pa-calculator/releases?draft=false&pre-release=false&per_page=1&limit=1"));
+    manager->get(request);
+}
+
+void MainWindow::checkUpdatesFinished(QNetworkReply *reply)
+{
+    if (reply->error()) {
+            //qDebug() << reply->errorString();
+            return;
+        }
+
+        QString ReplyText = reply->readAll();
+        QJsonDocument doc = QJsonDocument::fromJson(ReplyText.toUtf8());
+        QJsonArray array = doc.array();
+        QJsonObject obj=array.at(0).toObject();
+        QString current_version=obj.value("tag_name").toString().remove(0,1);
+        QString current_version_url=obj.value("html_url").toString();
+        QString installed_version = APP_VERSION;
+        installed_version=installed_version.mid(0,installed_version.lastIndexOf('.'));
+        //qDebug() << "Neueste Version: " <<current_version;
+        //qDebug() << "Installierte Version: " <<installed_version;
+        if (current_version!=installed_version){
+            QMessageBox msgBox;
+            msgBox.setTextFormat(Qt::RichText);
+            msgBox.setText("Es ist ein Update verfügbar!<br>Installierte Version: "+installed_version+"<br>Verfügbare Version: "+current_version+"<br> Du kannst das Update <a href='"+current_version_url+"'>hier</a> herunterladen.");
+            msgBox.setStandardButtons(QMessageBox::Ok);
+            msgBox.exec();
+        }
+}
+
diff --git a/source/mainwindow.h b/source/mainwindow.h
index 4642821..e3e6869 100644
--- a/source/mainwindow.h
+++ b/source/mainwindow.h
@@ -6,6 +6,14 @@
 #include "cspeaker.h"
 #include <cdac.h>
 
+#include <QThreadPool>
+#include <QNetworkAccessManager>
+#include <QNetworkRequest>
+#include <QNetworkReply>
+
+#include <QFuture>
+#include <QtConcurrent>
+
 QT_BEGIN_NAMESPACE
 namespace Ui { class MainWindow; }
 QT_END_NAMESPACE
@@ -18,6 +26,7 @@ public:
     MainWindow(QWidget *parent = nullptr);
     ~MainWindow();
 
+
 private slots:
     void on_ComboBox_selectSensUnit_currentIndexChanged(int index);
 
@@ -44,6 +53,9 @@ private slots:
 
     void on_checkBox_optimizeGain_stateChanged(int arg1);
 
+
+    void checkUpdatesFinished(QNetworkReply *reply);
+
 private:
     Ui::MainWindow *ui;
     cAmp* m_pCAmp;
@@ -62,8 +74,12 @@ private:
 
     void refreshLibraryDacs();
 
+    void checkUpdates();
     void loadLibrary();
     void saveLibrary();
 
+    QNetworkAccessManager *manager;
+    QNetworkRequest request;
+    QFuture<void> requestFuture;
 };
 #endif // MAINWINDOW_H
diff --git a/source/mainwindow.ui b/source/mainwindow.ui
index 264eaac..8de65cc 100644
--- a/source/mainwindow.ui
+++ b/source/mainwindow.ui
@@ -324,29 +324,13 @@
              </property>
             </widget>
            </item>
-           <item row="7" column="0">
-            <widget class="QLabel" name="label_21">
+           <item row="5" column="0">
+            <widget class="QLabel" name="label_24">
              <property name="text">
-              <string>Load Speaker from library</string>
+              <string>Number of speaker in parallel</string>
              </property>
             </widget>
            </item>
-           <item row="7" column="1">
-            <widget class="QComboBox" name="comboBox_librarySpeaker"/>
-           </item>
-           <item row="6" column="1">
-            <spacer name="verticalSpacer_4">
-             <property name="orientation">
-              <enum>Qt::Vertical</enum>
-             </property>
-             <property name="sizeHint" stdset="0">
-              <size>
-               <width>20</width>
-               <height>40</height>
-              </size>
-             </property>
-            </spacer>
-           </item>
            <item row="5" column="1">
             <widget class="QSpinBox" name="spinBox_speakerCount">
              <property name="minimum">
@@ -357,26 +341,16 @@
              </property>
             </widget>
            </item>
-           <item row="4" column="1">
-            <spacer name="verticalSpacer_6">
-             <property name="orientation">
-              <enum>Qt::Vertical</enum>
-             </property>
-             <property name="sizeHint" stdset="0">
-              <size>
-               <width>20</width>
-               <height>40</height>
-              </size>
-             </property>
-            </spacer>
-           </item>
-           <item row="5" column="0">
-            <widget class="QLabel" name="label_24">
+           <item row="7" column="0">
+            <widget class="QLabel" name="label_21">
              <property name="text">
-              <string>Number of speaker in parallel</string>
+              <string>Load Speaker from library</string>
              </property>
             </widget>
            </item>
+           <item row="7" column="1">
+            <widget class="QComboBox" name="comboBox_librarySpeaker"/>
+           </item>
            <item row="8" column="0" colspan="2">
             <widget class="QPushButton" name="pushButton_loadSpeaker">
              <property name="minimumSize">
@@ -395,6 +369,19 @@
              </property>
             </widget>
            </item>
+           <item row="4" column="1">
+            <spacer name="verticalSpacer_4">
+             <property name="orientation">
+              <enum>Qt::Vertical</enum>
+             </property>
+             <property name="sizeHint" stdset="0">
+              <size>
+               <width>20</width>
+               <height>10</height>
+              </size>
+             </property>
+            </spacer>
+           </item>
           </layout>
          </item>
         </layout>
@@ -466,12 +453,12 @@
               <enum>Qt::Vertical</enum>
              </property>
              <property name="sizeType">
-              <enum>QSizePolicy::Maximum</enum>
+              <enum>QSizePolicy::Expanding</enum>
              </property>
              <property name="sizeHint" stdset="0">
               <size>
                <width>20</width>
-               <height>40</height>
+               <height>20</height>
               </size>
              </property>
             </spacer>
@@ -619,6 +606,7 @@
              <property name="font">
               <font>
                <pointsize>15</pointsize>
+               <weight>75</weight>
                <bold>true</bold>
               </font>
              </property>
@@ -647,6 +635,9 @@
              <property name="text">
               <string>0 ms</string>
              </property>
+             <property name="textInteractionFlags">
+              <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
+             </property>
             </widget>
            </item>
            <item row="3" column="0">
@@ -666,6 +657,9 @@
              <property name="text">
               <string>0 ms</string>
              </property>
+             <property name="textInteractionFlags">
+              <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
+             </property>
             </widget>
            </item>
            <item row="1" column="0">
@@ -742,6 +736,7 @@
              <property name="font">
               <font>
                <pointsize>15</pointsize>
+               <weight>75</weight>
                <bold>true</bold>
               </font>
              </property>
@@ -770,6 +765,9 @@
              <property name="text">
               <string>0 ms</string>
              </property>
+             <property name="textInteractionFlags">
+              <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
+             </property>
             </widget>
            </item>
            <item row="3" column="0">
@@ -789,6 +787,9 @@
              <property name="text">
               <string>0 ms</string>
              </property>
+             <property name="textInteractionFlags">
+              <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
+             </property>
             </widget>
            </item>
            <item row="1" column="1">
@@ -857,7 +858,7 @@
      <x>0</x>
      <y>0</y>
      <width>1242</width>
-     <height>17</height>
+     <height>24</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuLibrary">