diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@
 
 project(kpat VERSION ${RELEASE_SERVICE_VERSION})
 
-set (QT_MIN_VERSION "5.9.0")
+set (QT_MIN_VERSION "5.10.0")
 set (KF5_MIN_VERSION "5.46.0")
 
 include(FindPkgConfig)
diff --git a/dealer.cpp b/dealer.cpp
--- a/dealer.cpp
+++ b/dealer.cpp
@@ -50,7 +50,7 @@
 #include <KConfigGroup>
 #include <KLocalizedString>
 #include <KMessageBox>
-#include <KRandom>
+#include <QRandomGenerator>
 #include <KSharedConfig>
 
 #include <QThread>
@@ -789,7 +789,7 @@
     else
     {
         // Generate a random number with an exponentional distribution averaging 1/4.
-        qreal randomExp = qMin<qreal>( -log( 1 - qreal( KRandom::random() ) / RAND_MAX ) / 4, 1 );
+        qreal randomExp = qMin<qreal>( -log( 1 - qreal( QRandomGenerator::global()->generate() ) / RAND_MAX ) / 4, 1 );
         int randomIndex =  randomExp * ( hintList.size() - 1 );
 
         std::sort(hintList.begin(), hintList.end(), prioSort);
diff --git a/mainwindow.cpp b/mainwindow.cpp
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -63,7 +63,7 @@
 #include <QIcon>
 #include <KLocalizedString>
 #include <KMessageBox>
-#include <KRandom>
+#include <QRandomGenerator>
 #include <QStatusBar>
 #include <QMenuBar>
 #include <QTemporaryFile>
@@ -407,7 +407,7 @@
 
 void MainWindow::startRandom()
 {
-    startNew(KRandom::random());
+    startNew(QRandomGenerator::global()->generate());
 }
 
 void MainWindow::startNew(int gameNumber)
@@ -419,7 +419,7 @@
 void MainWindow::slotPickRandom()
 {
     QList<KCardTheme> themes = KCardTheme::findAll();
-    KCardTheme theme = themes.at( KRandom::random() % themes.size() );
+    KCardTheme theme = themes.at( QRandomGenerator::global()->generate() % themes.size() );
     Settings::setCardTheme( theme.dirName() );
 
     appearanceChanged();
diff --git a/spider.cpp b/spider.cpp
--- a/spider.cpp
+++ b/spider.cpp
@@ -43,8 +43,9 @@
 #include "speeds.h"
 #include "patsolve/spidersolver.h"
 
+#include <QRandomGenerator>
+
 #include <KLocalizedString>
-#include <KRandom>
 #include <KSelectAction>
 
 
@@ -401,8 +402,8 @@
 QPointF Spider::randomPos()
 {
     QRectF rect = sceneRect();
-    qreal x = rect.left() + qreal(KRandom::random()) / RAND_MAX * (rect.width() - deck()->cardWidth());
-    qreal y = rect.top() + qreal(KRandom::random()) / RAND_MAX * (rect.height() - deck()->cardHeight());
+    qreal x = rect.left() + qreal(QRandomGenerator::global()->generate()) / RAND_MAX * (rect.width() - deck()->cardWidth());
+    qreal y = rect.top() + qreal(QRandomGenerator::global()->generate()) / RAND_MAX * (rect.height() - deck()->cardHeight());
     return QPointF( x, y );
 }