diff --git a/src/corelib/kernel/qpointer.cpp b/src/corelib/kernel/qpointer.cpp
index c884844db3a..e426c63ae5f 100644
--- a/src/corelib/kernel/qpointer.cpp
+++ b/src/corelib/kernel/qpointer.cpp
@@ -111,6 +111,17 @@
     is convertible to \c{T*}.
 */
 
+/*!
+    \fn template <class T> template <class X> QPointer<T> &QPointer<T>::operator=(const QPointer<X> &other)
+    \since 6.6
+
+    Conversion assignment operator. Makes this guarded pointer guard the
+    same object guarded by \a other.
+
+    \note This operator participates  in overload resolution only if \c{X*}
+    is convertible to \c{T*}.
+*/
+
 /*!
     \fn template <class T> void QPointer<T>::swap(QPointer &other)
     \since 5.6
diff --git a/src/corelib/kernel/qpointer.h b/src/corelib/kernel/qpointer.h
index 1914c45190a..7de159a535c 100644
--- a/src/corelib/kernel/qpointer.h
+++ b/src/corelib/kernel/qpointer.h
@@ -43,6 +43,13 @@ public:
     QPointer(const QPointer<X> &other) noexcept
         : wp(other.wp.internalData(), true) {}
 
+    template <typename X, if_convertible<X> = true>
+    QPointer &operator=(const QPointer<X> &other)
+    {
+        wp.assign(other.data());
+        return *this;
+    }
+
 #ifdef Q_QDOC
     // Stop qdoc from complaining about missing function
     ~QPointer();
diff --git a/tests/auto/corelib/kernel/qpointer/tst_qpointer.cpp b/tests/auto/corelib/kernel/qpointer/tst_qpointer.cpp
index 332cf6ab717..7f01c6f964a 100644
--- a/tests/auto/corelib/kernel/qpointer/tst_qpointer.cpp
+++ b/tests/auto/corelib/kernel/qpointer/tst_qpointer.cpp
@@ -57,6 +57,19 @@ void tst_QPointer::conversion()
         QCOMPARE_EQ(pio.get(), &file);
         QCOMPARE_EQ(pio, pf);
         QCOMPARE_EQ(pio.get(), pf.get());
+
+        // reset
+        pio = nullptr;
+        QCOMPARE_EQ(pio, nullptr);
+        QCOMPARE_EQ(pio.get(), nullptr);
+
+        // copy-assignment
+        QCOMPARE_EQ(pf, &file);
+        pio = pf;
+        QCOMPARE_EQ(pio, &file);
+        QCOMPARE_EQ(pio.get(), &file);
+        QCOMPARE_EQ(pio, pf);
+        QCOMPARE_EQ(pio.get(), pf.get());
     }
     // move-conversion:
     {
@@ -67,6 +80,16 @@ void tst_QPointer::conversion()
         QCOMPARE_EQ(pf, nullptr);
         QCOMPARE_EQ(pio, &file);
         QCOMPARE_EQ(pio.get(), &file);
+
+        // reset
+        pio = nullptr;
+        QCOMPARE_EQ(pio, nullptr);
+        QCOMPARE_EQ(pio.get(), nullptr);
+
+        // move-assignment
+        pio = QPointer<QFile>(&file);
+        QCOMPARE_EQ(pio, &file);
+        QCOMPARE_EQ(pio.get(), &file);
     }
 }