diff --git a/CMakeLists.txt b/CMakeLists.txt
index 80e6b20f3..d2c77da68 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,6 @@
 
 cmake_minimum_required(VERSION 3.13)
 include(ExternalProject)
-include(GNUInstallDirs)
 option(BUILD_DOC "Build documentation" OFF)
 
 
@@ -19,6 +18,12 @@ math(EXPR PROJECT_VERSION_CODE 10000*${PROJECT_VERSION_MAJOR}+100*${PROJECT_VERS
 add_compile_definitions(PROJECT_VERSION="${PROJECT_VERSION}")
 
 
+#
+# Installation
+#
+
+include(GNUInstallDirs)
+
 #
 # Qt Setup
 #
@@ -36,7 +41,7 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 #
 
 find_package(Doxygen)
-find_package(Qt5 5.12 COMPONENTS Concurrent Core Gui Positioning Quick QuickWidgets Sql Svg REQUIRED)
+find_package(Qt5 5.14 COMPONENTS Concurrent Core Gui Positioning Quick QuickWidgets Sql Svg REQUIRED)
 if( ANDROID )
   find_package(Qt5 5.14 COMPONENTS AndroidExtras REQUIRED)
 endif()
diff --git a/buildscript-android-release.sh b/buildscript-android-release.sh
index f9b77933d..61850737f 100755
--- a/buildscript-android-release.sh
+++ b/buildscript-android-release.sh
@@ -59,8 +59,7 @@ cmake /home/kebekus/Software/projects/enroute \
       -DCMAKE_C_COMPILER:STRING=$ANDROID_NDK_ROOT/toolchains/llvm/prebuilt/linux-x86_64/bin/clang \
       -DCMAKE_FIND_ROOT_PATH:STRING=$Qt5_DIR_ANDROID \
       -DCMAKE_PREFIX_PATH:STRING=$Qt5_DIR_ANDROID \
-      -DCMAKE_TOOLCHAIN_FILE:PATH=$ANDROID_NDK_ROOT/build/cmake/android.toolchain.cmake \
-      -DQT_QMAKE_EXECUTABLE:STRING=$Qt5_DIR_ANDROID/bin/qmake
+      -DCMAKE_TOOLCHAIN_FILE:PATH=$ANDROID_NDK_ROOT/build/cmake/android.toolchain.cmake
 
 # This is bizarrely necessary, or else 'android_deployment_settings.json'
 # will lack our custom AndroidManifest and the SSL libraries
diff --git a/src/Aircraft.h b/src/Aircraft.h
index abb159efc..d87861b31 100644
--- a/src/Aircraft.h
+++ b/src/Aircraft.h
@@ -18,8 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef AIRCRAFT_H
-#define AIRCRAFT_H
+#pragma once
 
 #include <QSettings>
 
@@ -40,18 +39,6 @@ class Aircraft : public QObject {
      */
     explicit Aircraft(QObject *parent = nullptr);
 
-    // No copy constructor
-    Aircraft(Aircraft const &) = delete;
-
-    // No assign operator
-    Aircraft &operator=(Aircraft const &) = delete;
-
-    // No move constructor
-    Aircraft(Aircraft &&) = delete;
-
-    // No move assignment operator
-    Aircraft &operator=(Aircraft &&) = delete;
-
     // Standard destructor
     ~Aircraft() override = default;
 
@@ -86,8 +73,7 @@ class Aircraft : public QObject {
      * number that lies in the interval [minAircraftSpeed, maxAircraftSpeed]
      * or NaN if the cruise speed has not been set.
      */
-    Q_PROPERTY(
-            double descentSpeedInKT READ descentSpeedInKT WRITE setDescentSpeedInKT NOTIFY valChanged)
+    Q_PROPERTY(double descentSpeedInKT READ descentSpeedInKT WRITE setDescentSpeedInKT NOTIFY valChanged)
 
     /*! \brief Getter function for property of the same name
      *
@@ -111,8 +97,7 @@ class Aircraft : public QObject {
      * number that lies in the interval [minFuelConsumption,
      * maxFuelConsumption] or NaN if no value has been set.
      */
-    Q_PROPERTY(double fuelConsumptionInLPH READ fuelConsumptionInLPH WRITE setFuelConsumptionInLPH
-               NOTIFY valChanged)
+    Q_PROPERTY(double fuelConsumptionInLPH READ fuelConsumptionInLPH WRITE setFuelConsumptionInLPH NOTIFY valChanged)
 
     /*! \brief Getter function for property of the same name
      *
@@ -147,6 +132,8 @@ class Aircraft : public QObject {
     void valChanged();
 
 private:
+    Q_DISABLE_COPY_MOVE(Aircraft)
+
     static constexpr double minAircraftSpeed = 40.0;
     static constexpr double maxAircraftSpeed = 400.0;
     static constexpr double minFuelConsuption = 5.0;
@@ -158,5 +145,3 @@ class Aircraft : public QObject {
 
     QSettings settings;
 };
-
-#endif
diff --git a/src/Airspace.h b/src/Airspace.h
index 3de86baa5..0d5aa3e44 100644
--- a/src/Airspace.h
+++ b/src/Airspace.h
@@ -18,8 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef AIRSPACE_H
-#define AIRSPACE_H
+#pragma once
 
 #include <QGeoPolygon>
 #include <QJsonObject>
@@ -48,18 +47,6 @@ class Airspace : public QObject {
      */
     explicit Airspace(const QJsonObject &geoJSONObject, QObject *parent = nullptr);
 
-    // No copy constructor
-    Airspace(Airspace const &) = delete;
-
-    // No assign operator
-    Airspace &operator=(Airspace const &) = delete;
-
-    // No move constructor
-    Airspace(Airspace &&) = delete;
-
-    // No move assignment operator
-    Airspace &operator=(Airspace &&) = delete;
-
     // Standard destructor
     ~Airspace() override = default;
 
@@ -157,11 +144,11 @@ class Airspace : public QObject {
     QString upperBound() const { return _upperBound; }
 
 private:
+    Q_DISABLE_COPY_MOVE(Airspace)
+
     QString _name{};
     QString _CAT{};
     QString _upperBound{};
     QString _lowerBound{};
     QGeoPolygon _polygon{};
 };
-
-#endif
diff --git a/src/AviationUnits.h b/src/AviationUnits.h
index 0028efdba..2f9d4a594 100644
--- a/src/AviationUnits.h
+++ b/src/AviationUnits.h
@@ -18,13 +18,12 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
+#pragma once
+
 #include <QGeoCoordinate>
 #include <QString>
 #include <QtMath>
 
-#ifndef AVIATIONUNITS_H
-#define AVIATIONUNITS_H
-
 /*! \brief Conversion between units used in aviation
  *
  * This class contains a few static methods that help with the conversion of
@@ -412,5 +411,3 @@ class AviationUnits {
         return {};
     return AviationUnits::Time::fromS(dist.toM() / speed.toMPS());
 }
-
-#endif
diff --git a/src/Downloadable.h b/src/Downloadable.h
index 3008ef885..83ef94302 100644
--- a/src/Downloadable.h
+++ b/src/Downloadable.h
@@ -18,8 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef DOWNLOADABLE_H
-#define DOWNLOADABLE_H
+#pragma once
 
 #include <QFile>
 #include <QFileInfo>
@@ -76,18 +75,6 @@ class Downloadable : public QObject {
     explicit Downloadable(QUrl url, const QString &localFileName,
                           QNetworkAccessManager *networkAccessManager, QObject *parent = nullptr);
 
-    // No copy constructor
-    Downloadable(Downloadable const &) = delete;
-
-    // No assign operator
-    Downloadable &operator=(Downloadable const &) = delete;
-
-    // No move constructor
-    Downloadable(Downloadable &&) = delete;
-
-    // No move assignment operator
-    Downloadable &operator=(Downloadable &&) = delete;
-
     /*! \brief Standard destructor
      *
      * This destructor will stop all running downloads and delete all temporary
@@ -443,6 +430,8 @@ private slots:
     void downloadHeaderFinished();
 
 private:
+     Q_DISABLE_COPY_MOVE(Downloadable)
+
     // Pointer the QNetworkAccessManager that will be used for all the
     // downloading
     QPointer<QNetworkAccessManager> _networkAccessManager;
@@ -479,5 +468,3 @@ private slots:
     // Section name
     QString _section {};
 };
-
-#endif // DOWNLOADABLE_H
diff --git a/src/DownloadableGroup.h b/src/DownloadableGroup.h
index 52f5e2d1d..aeb57e30e 100644
--- a/src/DownloadableGroup.h
+++ b/src/DownloadableGroup.h
@@ -18,9 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef DOWNLOADABLEGROUP_H
-#define DOWNLOADABLEGROUP_H
-
+#pragma once
 
 #include "DownloadableGroupWatcher.h"
 
@@ -43,18 +41,6 @@ class DownloadableGroup : public DownloadableGroupWatcher
     */
     explicit DownloadableGroup(QObject *parent=nullptr);
 
-    // No copy constructor
-    DownloadableGroup(DownloadableGroup const&) = delete;
-
-    // No assign operator
-    DownloadableGroup& operator =(DownloadableGroup const&) = delete;
-
-    // No move constructor
-    DownloadableGroup(DownloadableGroup&&) = delete;
-
-    // No move assignment operator
-    DownloadableGroup& operator=(DownloadableGroup&&) = delete;
-
     /*! \brief Adds a Downloadable to the group
 
       This method adds a Downloadable object to the group.
@@ -75,6 +61,7 @@ class DownloadableGroup : public DownloadableGroupWatcher
       @param downloadable Pointer to the Downloadable to be removed.
      */
     void removeFromGroup(Downloadable *downloadable);
-};
 
-#endif // DOWNLOADABLEGROUP_H
+private:
+    Q_DISABLE_COPY_MOVE(DownloadableGroup)
+};
diff --git a/src/DownloadableGroupWatcher.h b/src/DownloadableGroupWatcher.h
index 519768ff6..9e77c77c5 100644
--- a/src/DownloadableGroupWatcher.h
+++ b/src/DownloadableGroupWatcher.h
@@ -18,8 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef DownloadableGroupWatcher_H
-#define DownloadableGroupWatcher_H
+#pragma once
 
 #include <QTimer>
 
@@ -37,18 +36,6 @@ class DownloadableGroupWatcher : public QObject
     Q_OBJECT
 
 public:
-    // No copy constructor
-    DownloadableGroupWatcher(DownloadableGroupWatcher const&) = delete;
-
-    // No assign operator
-    DownloadableGroupWatcher& operator =(DownloadableGroupWatcher const&) = delete;
-
-    // No move constructor
-    DownloadableGroupWatcher(DownloadableGroupWatcher&&) = delete;
-
-    // No move assignment operator
-    DownloadableGroupWatcher& operator=(DownloadableGroupWatcher&&) = delete;
-
     /*! \brief List of Downloadables in this group
       
       This property holds the list of Downloadable objects in the group. The
@@ -209,6 +196,8 @@ protected slots:
     QList<QPointer<Downloadable>> _downloadables;
 
 private:
+     Q_DISABLE_COPY_MOVE(DownloadableGroupWatcher)
+
     // Provisions to provide the signal localFileContentChanged_delayed
     void emitLocalFileContentChanged_delayed();
     QTimer emitLocalFileContentChanged_delayedTimer;
@@ -220,5 +209,3 @@ protected slots:
     bool                          _cachedUpdatable {false};          // Cached value for the 'updatable' property
     QString                       _cachedUpdateSize {};              // Cached value for the 'updateSize' property
 };
-
-#endif // DownloadableGroupWatcher_H
diff --git a/src/FlightRoute.h b/src/FlightRoute.h
index 4e87809e3..a2a63cb04 100644
--- a/src/FlightRoute.h
+++ b/src/FlightRoute.h
@@ -18,8 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef FLIGHTROUTE_H
-#define FLIGHTROUTE_H
+#pragma once
 
 #include <QLocale>
 #include <QPointer>
@@ -64,18 +63,6 @@ class FlightRoute : public QObject
      */
     explicit FlightRoute(Aircraft *aircraft, Wind *wind, QObject *parent = nullptr);
 
-    // No copy constructor
-    FlightRoute(FlightRoute const&) = delete;
-
-    // No assign operator
-    FlightRoute& operator =(FlightRoute const&) = delete;
-
-    // No move constructor
-    FlightRoute(FlightRoute&&) = delete;
-
-    // No move assignment operator
-    FlightRoute& operator=(FlightRoute&&) = delete;
-
     // Standard destructor
     ~FlightRoute() override = default;
 
@@ -236,6 +223,8 @@ private slots:
     void updateLegs();
 
 private:
+     Q_DISABLE_COPY_MOVE(FlightRoute)
+
     // Used to check compatibility when loading/saving
     static const quint16 streamVersion = 1;
 
@@ -250,5 +239,3 @@ private slots:
 };
 
 #include "FlightRoute_Leg.h"
-
-#endif
diff --git a/src/FlightRoute_Leg.h b/src/FlightRoute_Leg.h
index f822c5a5c..19919c499 100644
--- a/src/FlightRoute_Leg.h
+++ b/src/FlightRoute_Leg.h
@@ -18,8 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef FLIGHTROUTE_LEG_H
-#define FLIGHTROUTE_LEG_H
+#pragma once
 
 #include <QPointer>
 
@@ -54,18 +53,6 @@ class FlightRoute::Leg : public QObject
    */
   explicit Leg(const Waypoint* start, const Waypoint *end, Aircraft *aircraft, Wind *wind, QObject *parent = nullptr);
   
-  // No copy constructor
-  Leg(Leg const&) = delete;
-  
-  // No assign operator
-  Leg& operator =(Leg const&) = delete;
-  
-  // No move constructor
-  Leg(Leg&&) = delete;
-  
-  // No move assignment operator
-  Leg& operator=(Leg&&) = delete;
-  
   // Standard destructor
   ~Leg() override = default;
   
@@ -169,6 +156,8 @@ class FlightRoute::Leg : public QObject
   void valChanged();
   
 private:
+  Q_DISABLE_COPY_MOVE(Leg)
+
   // Necessary data for computation of wind triangle?
   bool hasDataForWindTriangle() const;
   
@@ -180,5 +169,3 @@ class FlightRoute::Leg : public QObject
   QPointer<Aircraft> _aircraft {nullptr};
   QPointer<Wind> _wind {nullptr};
 };
-
-#endif
diff --git a/src/GeoMapProvider.h b/src/GeoMapProvider.h
index 9de87944d..ee49d8819 100644
--- a/src/GeoMapProvider.h
+++ b/src/GeoMapProvider.h
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,8 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef GEOMAPPROVIDER_H
-#define GEOMAPPROVIDER_H
+#pragma once
 
 #include <QFuture>
 #include <QGeoCoordinate>
@@ -72,18 +71,6 @@ class GeoMapProvider : public QObject
      */
     explicit GeoMapProvider(MapManager *manager, GlobalSettings* settings, QObject *parent = nullptr);
 
-    // No copy constructor
-    GeoMapProvider(GeoMapProvider const&) = delete;
-
-    // No assign operator
-    GeoMapProvider& operator =(GeoMapProvider const&) = delete;
-
-    // No move constructor
-    GeoMapProvider(GeoMapProvider&&) = delete;
-
-    // No move assignment operator
-    GeoMapProvider& operator=(GeoMapProvider&&) = delete;
-
     // Standard destructor
     ~GeoMapProvider() override = default;
 
@@ -182,6 +169,8 @@ class GeoMapProvider : public QObject
     void styleFileURLChanged();
 
 private:
+    Q_DISABLE_COPY_MOVE(GeoMapProvider)
+
     // This method simplifies strings by replacing all special characters with
     // analogues. So, "Neuchâtel" become "Neuchatel", "Épinal" becomes "Epinal"
     // and "Allgäu" becomes "Allgau"
@@ -235,5 +224,3 @@ class GeoMapProvider : public QObject
     QList<QPointer<Airspace>> _airspaces_;       // Cache: Airspaces
 
 };
-
-#endif
diff --git a/src/Geoid.h b/src/Geoid.h
index 0930ade38..010c8d67d 100644
--- a/src/Geoid.h
+++ b/src/Geoid.h
@@ -17,8 +17,7 @@
  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 
-#ifndef GEOID_H
-#define GEOID_H
+#pragma once
 
 #include <QObject>
 
@@ -78,5 +77,3 @@ class Geoid
     const static qint32 egm96_cols = 1440;
     const static qint32 egm96_size = egm96_rows * egm96_cols;
 };
-
-#endif // GEOID_H
diff --git a/src/GlobalSettings.h b/src/GlobalSettings.h
index 5fefaa2ba..192f0e3d3 100644
--- a/src/GlobalSettings.h
+++ b/src/GlobalSettings.h
@@ -18,8 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef GlobalSettings_H
-#define GlobalSettings_H
+#pragma once
 
 #include <QObject>
 #include <QSettings>
@@ -39,16 +38,7 @@ class GlobalSettings : public QObject
 {
     Q_OBJECT
 
-private:
-    Q_DISABLE_COPY(GlobalSettings)
-
 public:
-    // Delete the move constructor
-    GlobalSettings& operator=(GlobalSettings&&) = delete;
-
-    // Delete the copy assignment constructor
-    GlobalSettings(GlobalSettings&&) = delete;
-
     /*! \brief Standard constructor
      *
      * @param parent The standard QObject parent pointer
@@ -132,7 +122,7 @@ class GlobalSettings : public QObject
     void keepScreenOnChanged();
 
 private:
+    Q_DISABLE_COPY_MOVE(GlobalSettings)
+    
     QSettings *settings;
 };
-
-#endif // satNav_H
diff --git a/src/MapManager.h b/src/MapManager.h
index f40f1b140..f782f1c31 100644
--- a/src/MapManager.h
+++ b/src/MapManager.h
@@ -18,8 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef MAPMANAGER_H
-#define MAPMANAGER_H
+#pragma once
 
 #include <QTimer> 
 
@@ -66,18 +65,6 @@ class MapManager : public QObject
     @param parent The standard QObject parent pointer.
   */
   explicit MapManager(QNetworkAccessManager *networkAccessManager, QObject *parent=nullptr);
-
-  // No copy constructor
-  MapManager(MapManager const&) = delete;
-  
-  // No assign operator
-  MapManager& operator =(MapManager const&) = delete;
-  
-  // No move constructor
-  MapManager(MapManager&&) = delete;
-  
-  // No move assignment operator
-  MapManager& operator=(MapManager&&) = delete;
   
   /*! \brief Destructor
     
@@ -199,6 +186,8 @@ private slots:
   void autoUpdateGeoMapList();
   
 private:
+  Q_DISABLE_COPY_MOVE(MapManager)
+  
   // This method returns a list of files in the download directory that have no
   // corresponding entry in _aviationMaps.
   QList<QString> unattachedFiles() const;
@@ -221,5 +210,3 @@ private slots:
   // objects constructed by this class
   QPointer<QNetworkAccessManager> _networkAccessManager;
 };
-
-#endif // MAPMANAGER_H
diff --git a/src/MobileAdaptor.h b/src/MobileAdaptor.h
index c20618604..29881e5cc 100644
--- a/src/MobileAdaptor.h
+++ b/src/MobileAdaptor.h
@@ -19,8 +19,7 @@
  ***************************************************************************/
 
 
-#ifndef MOBILEADAPTOR_H
-#define MOBILEADAPTOR_H
+#pragma once
 
 #include <QObject>
 
@@ -46,14 +45,14 @@ public slots:
     On Android, hides the android splash screen. On other platforms, this does
     nothing. The implementation ensures that QtAndroid::hideSplashScreen is
     called (only once, regardless of how often this slot is used).
-  */
+    */
     void hideSplashScreen();
 
     /*! \brief Make the device briefly vibrate
 
     On Android, make the device briefly vibrate. On other platforms, this does
     nothing.
-  */
+    */
     void vibrateBrief();
 
     /*! \brief On Android, disables the screen lock
@@ -62,17 +61,18 @@ public slots:
 
     @param on If set to 'true', the screen will never switch off while the app
         is shown to the user.
-  */
+    */
     void keepScreenOn(bool on);
 
     /*! \brief Shows a notifaction, indicating that a download is in progress
 
-    @param show If set to 'true', a notification will be shown. If set to 'false', any existing notification will be withdrawn
-  */
+    @param show If set to 'true', a notification will be shown. If set to
+    'false', any existing notification will be withdrawn
+    */
     void showDownloadNotification(bool show);
 
 private:
+    Q_DISABLE_COPY_MOVE(MobileAdaptor)
+  
     bool splashScreenHidden {false};
 };
-
-#endif // ANDROIDADAPTOR_H
diff --git a/src/SatNav.h b/src/SatNav.h
index 821fc65ac..364cb131c 100644
--- a/src/SatNav.h
+++ b/src/SatNav.h
@@ -18,9 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-
-#ifndef SatNav_H
-#define SatNav_H
+#pragma once
 
 #include <QGeoPositionInfoSource>
 #include <QLocale>
@@ -59,16 +57,7 @@ class SatNav : public QObject
 {
   Q_OBJECT
   
-private:
-  Q_DISABLE_COPY(SatNav)
-  
 public:
-  // Delete the move constructor
-  SatNav& operator=(SatNav&&) = delete;
-
-  // Delete the copy assignment constructor
-  SatNav(SatNav&&) = delete;
-
   /*! \brief Standard constructor
 
     @param parent The standard QObject parent pointer
@@ -504,6 +493,8 @@ private slots:
   void timeout();
   
 private:
+  Q_DISABLE_COPY_MOVE(SatNav)
+
   // Aircraft is considered flying is speed is at least this high
   static constexpr double minFlightSpeedInKT = 30.0;
   // Coordinates of EDTF airfield
@@ -537,5 +528,3 @@ private slots:
   // to call timeout() after timeoutThreshold milliseconds of no data.
   QTimer timeoutCounter;
 };
-
-#endif // satNav_H
diff --git a/src/ScaleQuickItem.h b/src/ScaleQuickItem.h
index 10920bf22..4e4ee113b 100644
--- a/src/ScaleQuickItem.h
+++ b/src/ScaleQuickItem.h
@@ -18,9 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-
-#ifndef SCALEQUICKITEM_H
-#define SCALEQUICKITEM_H
+#pragma once
 
 #include <QtQuick/QQuickPaintedItem>
 
@@ -52,17 +50,17 @@ class ScaleQuickItem : public QQuickPaintedItem
   /*! \brief Getter function for the property with the same name
     
     @returns Property pixelPer10km
-   */
+  */
   qreal pixelPer10km() const {return _pixelPer10km;}
 
   /*! \brief Setter function for the property with the same name
-
+    
     @param _pxp10k  Property pixelPer10km
   */
   void setPixelPer10km(qreal _pxp10k);
-
+  
   /*! \brief Re-implemented from QQuickPaintedItem to implement painting
-
+    
     @param painter Pointer to the QPainter used for painting
   */
   void paint(QPainter *painter) override;
@@ -72,7 +70,7 @@ class ScaleQuickItem : public QQuickPaintedItem
   void pixelPer10kmChanged();
 
 private:
+  Q_DISABLE_COPY_MOVE(ScaleQuickItem)
+
   qreal _pixelPer10km {0.0};
 };
-
-#endif // SCALE_H
diff --git a/src/Share.h b/src/Share.h
index ac72429fa..5d8683c3c 100644
--- a/src/Share.h
+++ b/src/Share.h
@@ -17,8 +17,7 @@
  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 
-#ifndef SHARE_H
-#define SHARE_H
+#pragma once
 
 #include <QObject>
 
@@ -165,6 +164,8 @@ class Share : public QObject
     void fileReceived(const QString& fname);
 
 private:
+    Q_DISABLE_COPY_MOVE(Share)
+
     static Share* mInstance;
     QString mSavePath;
 
@@ -173,5 +174,3 @@ class Share : public QObject
     QString tempDir();
     void outgoingIntent(const QString& methodName, const QString& filePath, const QString& mimeType);
 };
-
-#endif // SHARE_H
diff --git a/src/TileHandler.h b/src/TileHandler.h
index 896005f5a..8ffecd407 100644
--- a/src/TileHandler.h
+++ b/src/TileHandler.h
@@ -18,8 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef TILEHANDLER_H
-#define TILEHANDLER_H
+#pragma once
 
 #include <QSet>
 #include <QSqlDatabase>
@@ -66,18 +65,6 @@ class TileHandler : public QHttpEngine::Handler
   */
   explicit TileHandler(const QList<QPointer<Downloadable>>& mbtileFiles, const QString& baseURLName, QObject *parent = nullptr);
   
-  // No copy constructor
-  TileHandler(TileHandler const&) = delete;
-  
-  // No assign operator
-  TileHandler& operator =(TileHandler const&) = delete;
-  
-  // No move constructor
-  TileHandler(TileHandler&&) = delete;
-  
-  // No move assignment operator
-  TileHandler& operator=(TileHandler&&) = delete;
-  
   // Destructor
   ~TileHandler() override;
   
@@ -200,6 +187,8 @@ private slots:
   void removeFile(const QString& localFileName);
 
 private:
+  Q_DISABLE_COPY_MOVE(TileHandler)
+
   QSet<QString> databaseConnections;
   
   QString _name;
@@ -216,5 +205,3 @@ private slots:
   
   bool hasDBError {false};
 };
-
-#endif // TILEHANDLER
diff --git a/src/TileServer.h b/src/TileServer.h
index 765927ca0..1af422261 100644
--- a/src/TileServer.h
+++ b/src/TileServer.h
@@ -18,8 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef TILESERVER_H
-#define TILESERVER_H
+#pragma once
 
 #include <qhttpengine/filesystemhandler.h>
 #include <qhttpengine/server.h>
@@ -71,18 +70,6 @@ class TileServer : public QHttpEngine::Server
   */
   explicit TileServer(QUrl baseUrl=QUrl(), QObject *parent = nullptr);
   
-  // No copy constructor
-  TileServer(TileServer const&) = delete;
-  
-  // No assign operator
-  TileServer& operator =(TileServer const&) = delete;
-  
-  // No move constructor
-  TileServer(TileServer&&) = delete;
-  
-  // No move assignment operator
-  TileServer& operator=(TileServer&&) = delete;
-  
   // Standard destructor
   ~TileServer() override = default;
   
@@ -126,6 +113,8 @@ public slots:
   void removeMbtilesFileSet(const QString& path);
   
 private:
+  Q_DISABLE_COPY_MOVE(TileServer)
+
   void setUpTileHandlers();
   
   QPointer<QHttpEngine::FilesystemHandler> currentFileSystemHandler;
@@ -134,6 +123,3 @@ public slots:
   
   QUrl _baseUrl;
 };
-
-
-#endif
diff --git a/src/Waypoint.h b/src/Waypoint.h
index 21e6288f6..4f0afa66b 100644
--- a/src/Waypoint.h
+++ b/src/Waypoint.h
@@ -18,8 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef WAYPOINT_H
-#define WAYPOINT_H
+#pragma once
 
 #include <QGeoCoordinate>
 #include <QMap>
@@ -87,19 +86,7 @@ class Waypoint : public QObject
     @param parent The standard QObject parent pointer
   */
   explicit Waypoint(QDataStream &stream, QObject *parent = nullptr);
-  
-  // No copy constructor
-  Waypoint(Waypoint const&) = delete;
-  
-  // No assign operator
-  Waypoint& operator =(Waypoint const&) = delete;
-  
-  // No move constructor
-  Waypoint(Waypoint&&) = delete;
-  
-  // No move assignment operator
-  Waypoint& operator=(Waypoint&&) = delete;
-  
+    
   // Standard destructor
   ~Waypoint() = default;
   
@@ -185,11 +172,11 @@ class Waypoint : public QObject
   Q_INVOKABLE QString wayFrom(const QGeoCoordinate& position) const;
   
 private:
+  Q_DISABLE_COPY_MOVE(Waypoint)
+
   // Used to check compatibility when loading/saving
   static const quint16 streamVersion = 5;
   
   QGeoCoordinate _coordinate;
   QMultiMap<QString, QVariant> _properties;
 };
-
-#endif
diff --git a/src/Wind.h b/src/Wind.h
index 8b55c9f31..032c1abd3 100644
--- a/src/Wind.h
+++ b/src/Wind.h
@@ -18,8 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef WIND_H
-#define WIND_H
+#pragma once
 
 #include <QSettings>
 
@@ -40,19 +39,7 @@ class Wind : public QObject
     @param parent The standard QObject parent pointer
   */
   explicit Wind(QObject *parent = nullptr);
-  
-  // No copy constructor
-  Wind(Wind const&) = delete;
-  
-  // No assign operator
-  Wind& operator =(Wind const&) = delete;
-  
-  // No move constructor
-  Wind(Wind&&) = delete;
-  
-  // No move assignment operator
-  Wind& operator=(Wind&&) = delete;
-
+    
   // Standard destructor
   ~Wind() override = default;
   
@@ -121,6 +108,8 @@ class Wind : public QObject
   void valChanged();
   
 private:
+  Q_DISABLE_COPY_MOVE(Wind)
+
   static constexpr double minWindSpeed     =   0.0;
   static constexpr double maxWindSpeed     = 100.0;
   static constexpr double minWindDirection =   0.0;
@@ -131,5 +120,3 @@ class Wind : public QObject
   
   QSettings settings;
 };
-
-#endif
diff --git a/src/qml/dialogs/AltitudeCorrectionDialog.qml b/src/qml/dialogs/AltitudeCorrectionDialog.qml
index e9250a1f7..ef246914a 100644
--- a/src/qml/dialogs/AltitudeCorrectionDialog.qml
+++ b/src/qml/dialogs/AltitudeCorrectionDialog.qml
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,10 +18,10 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
-import QtQuick.Controls.Material 2.12
-import QtQuick.Layouts 1.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
+import QtQuick.Controls.Material 2.14
+import QtQuick.Layouts 1.14
 
 import enroute 1.0
 
diff --git a/src/qml/dialogs/ErrorDialog.qml b/src/qml/dialogs/ErrorDialog.qml
index 31b633730..394026691 100644
--- a/src/qml/dialogs/ErrorDialog.qml
+++ b/src/qml/dialogs/ErrorDialog.qml
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,8 +18,8 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
 
 Dialog {
     id: dlg
diff --git a/src/qml/dialogs/FirstRunDialog.qml b/src/qml/dialogs/FirstRunDialog.qml
index 5b9b4aaa2..c68fc9342 100644
--- a/src/qml/dialogs/FirstRunDialog.qml
+++ b/src/qml/dialogs/FirstRunDialog.qml
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,8 +18,8 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
 
 LongTextDialog {
     id: frRld
diff --git a/src/qml/dialogs/LongTextDialog.qml b/src/qml/dialogs/LongTextDialog.qml
index f7f158039..4401e32b1 100644
--- a/src/qml/dialogs/LongTextDialog.qml
+++ b/src/qml/dialogs/LongTextDialog.qml
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,8 +18,8 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
 
 Dialog {
     id: dlg
diff --git a/src/qml/dialogs/SatNavStatusDialog.qml b/src/qml/dialogs/SatNavStatusDialog.qml
index 67f38bd87..04580d131 100644
--- a/src/qml/dialogs/SatNavStatusDialog.qml
+++ b/src/qml/dialogs/SatNavStatusDialog.qml
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,10 +18,10 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
-import QtQuick.Controls.Material 2.12
-import QtQuick.Layouts 1.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
+import QtQuick.Controls.Material 2.14
+import QtQuick.Layouts 1.14
 
 import enroute 1.0
 
diff --git a/src/qml/dialogs/UpdateMapDialog.qml b/src/qml/dialogs/UpdateMapDialog.qml
index 264b05f33..0d57d8232 100644
--- a/src/qml/dialogs/UpdateMapDialog.qml
+++ b/src/qml/dialogs/UpdateMapDialog.qml
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,8 +18,8 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
 
 LongTextDialog {
     id: mud
diff --git a/src/qml/dialogs/WaypointDescription.qml b/src/qml/dialogs/WaypointDescription.qml
index cb5eac189..399c16382 100644
--- a/src/qml/dialogs/WaypointDescription.qml
+++ b/src/qml/dialogs/WaypointDescription.qml
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,10 +18,10 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
-import QtQuick.Layouts 1.12
-import QtQuick.Shapes 1.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
+import QtQuick.Layouts 1.14
+import QtQuick.Shapes 1.14
 
 import enroute 1.0
 
diff --git a/src/qml/items/AutoSizingMenu.qml b/src/qml/items/AutoSizingMenu.qml
index 20f6a2e9e..f547e356c 100644
--- a/src/qml/items/AutoSizingMenu.qml
+++ b/src/qml/items/AutoSizingMenu.qml
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,8 +18,8 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
 
 Menu {
     width: {
diff --git a/src/qml/items/FlightMap.qml b/src/qml/items/FlightMap.qml
index cbbed1ed7..72c35d04a 100644
--- a/src/qml/items/FlightMap.qml
+++ b/src/qml/items/FlightMap.qml
@@ -18,9 +18,9 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtLocation 5.12
-import QtQuick 2.12
-import QtQuick.Controls 2.12
+import QtLocation 5.14
+import QtQuick 2.14
+import QtQuick.Controls 2.14
 
 import enroute 1.0
 
diff --git a/src/qml/items/MFM.qml b/src/qml/items/MFM.qml
index 5f13bb549..f21a499d9 100644
--- a/src/qml/items/MFM.qml
+++ b/src/qml/items/MFM.qml
@@ -18,10 +18,11 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtLocation 5.12
-import QtPositioning 5.12
-import QtQuick 2.12
-import QtQuick.Controls 2.12
+import QtLocation 5.14
+import QtPositioning 5.14
+import QtQml 2.14
+import QtQuick 2.14
+import QtQuick.Controls 2.14
 
 import enroute 1.0
 
diff --git a/src/qml/items/NavBar.qml b/src/qml/items/NavBar.qml
index 5cc2d57f9..274d4b62c 100644
--- a/src/qml/items/NavBar.qml
+++ b/src/qml/items/NavBar.qml
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,9 +18,9 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
-import QtQuick.Controls.Material 2.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
+import QtQuick.Controls.Material 2.14
 
 Rectangle {
     id: grid
diff --git a/src/qml/main.qml b/src/qml/main.qml
index 4250d9fad..7c612ba2d 100644
--- a/src/qml/main.qml
+++ b/src/qml/main.qml
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,11 +18,11 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
-import QtQuick.Controls.Material 2.12
-import QtQuick.Layouts 1.12
-import QtSensors 5.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
+import QtQuick.Controls.Material 2.14
+import QtQuick.Layouts 1.14
+import QtSensors 5.14
 
 import enroute 1.0
 
diff --git a/src/qml/pages/BugReportPage.qml b/src/qml/pages/BugReportPage.qml
index 7bb8d5bd4..526578843 100644
--- a/src/qml/pages/BugReportPage.qml
+++ b/src/qml/pages/BugReportPage.qml
@@ -18,9 +18,9 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
-import QtQuick.Layouts 1.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
+import QtQuick.Layouts 1.14
 
 Page {
     id: pg
diff --git a/src/qml/pages/FlightRouteAddWPPage.qml b/src/qml/pages/FlightRouteAddWPPage.qml
index e105929d0..600f3eda0 100644
--- a/src/qml/pages/FlightRouteAddWPPage.qml
+++ b/src/qml/pages/FlightRouteAddWPPage.qml
@@ -18,10 +18,10 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
-import QtQuick.Controls.Material 2.12
-import QtQuick.Layouts 1.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
+import QtQuick.Controls.Material 2.14
+import QtQuick.Layouts 1.14
 
 Page {
     id: page
diff --git a/src/qml/pages/FlightRoutePage.qml b/src/qml/pages/FlightRoutePage.qml
index 0d831923c..9e0c0b31c 100644
--- a/src/qml/pages/FlightRoutePage.qml
+++ b/src/qml/pages/FlightRoutePage.qml
@@ -18,10 +18,10 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
-import QtQuick.Controls.Material 2.12
-import QtQuick.Layouts 1.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
+import QtQuick.Controls.Material 2.14
+import QtQuick.Layouts 1.14
 
 import enroute 1.0
 
diff --git a/src/qml/pages/InfoPage.qml b/src/qml/pages/InfoPage.qml
index d98b423d7..81e42938d 100644
--- a/src/qml/pages/InfoPage.qml
+++ b/src/qml/pages/InfoPage.qml
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,10 +18,10 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
-import QtQuick.Controls.Material 2.12
-import QtQuick.Layouts 1.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
+import QtQuick.Controls.Material 2.14
+import QtQuick.Layouts 1.14
 
 Page {
     id: pg
diff --git a/src/qml/pages/MapManager.qml b/src/qml/pages/MapManager.qml
index 75574afd2..34b09462f 100644
--- a/src/qml/pages/MapManager.qml
+++ b/src/qml/pages/MapManager.qml
@@ -18,10 +18,10 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
-import QtQuick.Controls.Material 2.12
-import QtQuick.Layouts 1.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
+import QtQuick.Controls.Material 2.14
+import QtQuick.Layouts 1.14
 
 import "../items"
 
diff --git a/src/qml/pages/MapPage.qml b/src/qml/pages/MapPage.qml
index 6cd71343c..a322bc434 100644
--- a/src/qml/pages/MapPage.qml
+++ b/src/qml/pages/MapPage.qml
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,10 +18,10 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtLocation 5.12
-import QtPositioning 5.12
-import QtQuick 2.12
-import QtQuick.Controls 2.12
+import QtLocation 5.14
+import QtPositioning 5.14
+import QtQuick 2.14
+import QtQuick.Controls 2.14
 
 import enroute 1.0
 
diff --git a/src/qml/pages/NearbyAirfields.qml b/src/qml/pages/NearbyAirfields.qml
index feecbb3e2..37ee31dc5 100644
--- a/src/qml/pages/NearbyAirfields.qml
+++ b/src/qml/pages/NearbyAirfields.qml
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,10 +18,10 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
-import QtQuick.Controls.Material 2.12
-import QtQuick.Layouts 1.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
+import QtQuick.Controls.Material 2.14
+import QtQuick.Layouts 1.14
 
 import enroute 1.0
 
diff --git a/src/qml/pages/ParticipatePage.qml b/src/qml/pages/ParticipatePage.qml
index 77dcc67f9..b89a1b132 100644
--- a/src/qml/pages/ParticipatePage.qml
+++ b/src/qml/pages/ParticipatePage.qml
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2019 by Stefan Kebekus                                  *
+ *   Copyright (C) 2019-2020 by Stefan Kebekus                             *
  *   stefan.kebekus@gmail.com                                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,9 +18,9 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
-import QtQuick.Layouts 1.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
+import QtQuick.Layouts 1.14
 
 Page {
     id: pg
diff --git a/src/qml/pages/SettingsPage.qml b/src/qml/pages/SettingsPage.qml
index a30ea929b..a2e61f5de 100644
--- a/src/qml/pages/SettingsPage.qml
+++ b/src/qml/pages/SettingsPage.qml
@@ -18,10 +18,10 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-import QtQuick 2.12
-import QtQuick.Controls 2.12
-import QtQuick.Controls.Material 2.12
-import QtQuick.Layouts 1.12
+import QtQuick 2.14
+import QtQuick.Controls 2.14
+import QtQuick.Controls.Material 2.14
+import QtQuick.Layouts 1.14
 
 Page {
     title: qsTr("Settings")