diff --git a/oscar/SleepLib/loader_plugins/somnopose_loader.cpp b/oscar/SleepLib/loader_plugins/somnopose_loader.cpp
index 190d28a6..8506dbe2 100644
--- a/oscar/SleepLib/loader_plugins/somnopose_loader.cpp
+++ b/oscar/SleepLib/loader_plugins/somnopose_loader.cpp
@@ -94,8 +94,13 @@ int SomnoposeLoader::OpenFile(const QString & filename)
         return -1;
     }
 
-    QDateTime epoch(QDate(2001, 1, 1));
-    qint64 ep = qint64(epoch.toTime_t()+epoch.offsetFromUtc()) * 1000, time=0;
+     #if QT_VERSION >= QT_VERSION_CHECK(5,14,0)
+         QDateTime epoch(QDate(2001, 1, 1).startOfDay(Qt::OffsetFromUTC));
+         qint64 ep = epoch.toMSecsSinceEpoch() , time=0;
+     #else
+        QDateTime epoch(QDate(2001, 1, 1));
+        qint64 ep = qint64(epoch.toTime_t()+epoch.offsetFromUtc()) * 1000, time=0;
+    #endif
     qDebug() << "Epoch starts at" << epoch.toString();
 
     double timestamp, orientation=0, inclination=0, movement=0;
diff --git a/oscar/SleepLib/profiles.cpp b/oscar/SleepLib/profiles.cpp
index 2b373dce..e44ebe8b 100644
--- a/oscar/SleepLib/profiles.cpp
+++ b/oscar/SleepLib/profiles.cpp
@@ -159,7 +159,7 @@ void Profile::addLock()
     QFile lockfile(p_path+"lockfile");
     lockfile.open(QFile::WriteOnly);
     QByteArray ba;
-    ba.append(QHostInfo::localHostName());
+    ba.append(QHostInfo::localHostName().toUtf8());
     lockfile.write(ba);
     lockfile.close();
 }
diff --git a/oscar/logger.cpp b/oscar/logger.cpp
index d881f8d0..7a714937 100644
--- a/oscar/logger.cpp
+++ b/oscar/logger.cpp
@@ -193,7 +193,11 @@ void LogThread::run()
         while (connected && m_logFile && !buffer.isEmpty()) {
             QString msg = buffer.takeFirst();
             if (m_logStream) {
-                *m_logStream << msg << endl;
+                #if QT_VERSION >= QT_VERSION_CHECK(5,14,0)
+                    *m_logStream << msg << Qt::endl;
+                #else
+                    *m_logStream << msg << endl;
+                #endif
             }
             emit outputLog(msg);
         }
diff --git a/oscar/mainwindow.cpp b/oscar/mainwindow.cpp
index 20e3437c..3078be97 100644
--- a/oscar/mainwindow.cpp
+++ b/oscar/mainwindow.cpp
@@ -38,6 +38,7 @@
 #include <QScreen>
 #include <QStorageInfo>
 #include <cmath>
+#include <QRandomGenerator>
 
 #include "common_gui.h"
 #include "version.h"
@@ -257,7 +258,7 @@ void MainWindow::SetupGUI()
     ui->actionImport_RemStar_MSeries_Data->setVisible(false);
 #endif
 
-    qsrand(QDateTime::currentDateTime().toTime_t());
+    QRandomGenerator(QDateTime::currentDateTime().toTime_t());
 
     QList<int> a;