diff --git a/examples/network/blockingfortuneclient/fortunethread.cpp b/examples/network/blockingfortuneclient/fortunethread.cpp
index 8e8df8cf8e4..464482e17b8 100644
--- a/examples/network/blockingfortuneclient/fortunethread.cpp
+++ b/examples/network/blockingfortuneclient/fortunethread.cpp
@@ -62,7 +62,7 @@ void FortuneThread::run()
 //! [8] //! [11]
 
         QDataStream in(&socket);
-        in.setVersion(QDataStream::Qt_4_0);
+        in.setVersion(QDataStream::Qt_6_5);
         QString fortune;
 //! [11] //! [12]
 
diff --git a/examples/network/fortuneclient/client.cpp b/examples/network/fortuneclient/client.cpp
index e6169ce88c9..af7efbd9ed7 100644
--- a/examples/network/fortuneclient/client.cpp
+++ b/examples/network/fortuneclient/client.cpp
@@ -60,7 +60,7 @@ Client::Client(QWidget *parent)
 
 //! [1]
     in.setDevice(tcpSocket);
-    in.setVersion(QDataStream::Qt_4_0);
+    in.setVersion(QDataStream::Qt_6_5);
 //! [1]
 
     connect(hostCombo, &QComboBox::editTextChanged,
diff --git a/examples/network/fortuneserver/server.cpp b/examples/network/fortuneserver/server.cpp
index 5bf7a48e290..67d6117566b 100644
--- a/examples/network/fortuneserver/server.cpp
+++ b/examples/network/fortuneserver/server.cpp
@@ -94,7 +94,7 @@ void Server::sendFortune()
 //! [5]
     QByteArray block;
     QDataStream out(&block, QIODevice::WriteOnly);
-    out.setVersion(QDataStream::Qt_5_10);
+    out.setVersion(QDataStream::Qt_6_5);
 
     out << fortunes[QRandomGenerator::global()->bounded(fortunes.size())];
 //! [4] //! [7]
diff --git a/examples/network/threadedfortuneserver/fortunethread.cpp b/examples/network/threadedfortuneserver/fortunethread.cpp
index 27050e17bd6..8bef57599e9 100644
--- a/examples/network/threadedfortuneserver/fortunethread.cpp
+++ b/examples/network/threadedfortuneserver/fortunethread.cpp
@@ -25,7 +25,7 @@ void FortuneThread::run()
 
     QByteArray block;
     QDataStream out(&block, QIODevice::WriteOnly);
-    out.setVersion(QDataStream::Qt_4_0);
+    out.setVersion(QDataStream::Qt_6_5);
     out << text;
 //! [3] //! [4]