diff --git a/src/corelib/kernel/qabstracteventdispatcher.cpp b/src/corelib/kernel/qabstracteventdispatcher.cpp
index f3056a399ca..b6619d3c4d2 100644
--- a/src/corelib/kernel/qabstracteventdispatcher.cpp
+++ b/src/corelib/kernel/qabstracteventdispatcher.cpp
@@ -702,6 +702,16 @@ int QAbstractEventDispatcherV2::remainingTime(int timerId)
     auto self = static_cast<QAbstractEventDispatcherV2 *>(this);
     return fromDuration<int>(self->remainingTime(Qt::TimerId(timerId)));
 }
+
+/*!
+    \internal
+    Temporary compatibility override.
+*/
+bool QAbstractEventDispatcherV2::processEventsWithDeadline(QEventLoop::ProcessEventsFlags flags, QDeadlineTimer deadline)
+{
+    Q_UNUSED(deadline);
+    return processEvents(flags);
+}
 #endif // ! Qt 7
 
 QT_END_NAMESPACE
diff --git a/src/corelib/kernel/qabstracteventdispatcher.h b/src/corelib/kernel/qabstracteventdispatcher.h
index 418e674954e..54d8406dcfc 100644
--- a/src/corelib/kernel/qabstracteventdispatcher.h
+++ b/src/corelib/kernel/qabstracteventdispatcher.h
@@ -108,6 +108,7 @@ public:
     virtual bool unregisterTimer(Qt::TimerId timerId) = 0;
     virtual QList<TimerInfoV2> timersForObject(QObject *object) const = 0;
     virtual Duration remainingTime(Qt::TimerId timerId) const = 0;
+    virtual bool processEventsWithDeadline(QEventLoop::ProcessEventsFlags flags, QDeadlineTimer deadline); // reserved for 6.9
 
 protected:
     QAbstractEventDispatcherV2(QAbstractEventDispatcherPrivate &, QObject *parent);