diff --git a/src/corelib/kernel/qcoreevent.cpp b/src/corelib/kernel/qcoreevent.cpp
index 231e7f34cdb..71690ba90be 100644
--- a/src/corelib/kernel/qcoreevent.cpp
+++ b/src/corelib/kernel/qcoreevent.cpp
@@ -262,6 +262,7 @@ QT_BEGIN_NAMESPACE
     \omitvalue ShowWindowRequest
     \omitvalue Speech
     \omitvalue Style
+    \omitvalue StyleAnimationUpdate
     \omitvalue ZeroTimerEvent
     \omitvalue ApplicationActivated
     \omitvalue ApplicationDeactivated
diff --git a/src/corelib/kernel/qcoreevent.h b/src/corelib/kernel/qcoreevent.h
index 98dde37e3a5..d30f93f9f35 100644
--- a/src/corelib/kernel/qcoreevent.h
+++ b/src/corelib/kernel/qcoreevent.h
@@ -279,6 +279,8 @@ public:
 
         PlatformPanel = 212,
 
+        StyleAnimationUpdate = 213,             // style animation target should be updated
+
         // 512 reserved for Qt Jambi's MetaCall event
         // 513 reserved for Qt Jambi's DeleteOnMainThread event
 
diff --git a/src/widgets/graphicsview/qgraphicswidget.cpp b/src/widgets/graphicsview/qgraphicswidget.cpp
index cc8ea47e7ee..05ae51c6307 100644
--- a/src/widgets/graphicsview/qgraphicswidget.cpp
+++ b/src/widgets/graphicsview/qgraphicswidget.cpp
@@ -1408,6 +1408,7 @@ bool QGraphicsWidget::event(QEvent *event)
         break;
     case QEvent::WindowActivate:
     case QEvent::WindowDeactivate:
+    case QEvent::StyleAnimationUpdate:
         update();
         break;
         // Taken from QWidget::event
diff --git a/src/widgets/kernel/qwidget.cpp b/src/widgets/kernel/qwidget.cpp
index ffcaa15527a..fa055bb2109 100644
--- a/src/widgets/kernel/qwidget.cpp
+++ b/src/widgets/kernel/qwidget.cpp
@@ -8142,6 +8142,9 @@ bool QWidget::event(QEvent *event)
     case QEvent::UpdateLater:
         update(static_cast<QUpdateLaterEvent*>(event)->region());
         break;
+    case QEvent::StyleAnimationUpdate:
+        update();
+        break;
 
     case QEvent::WindowBlocked:
     case QEvent::WindowUnblocked: