diff --git a/lib/src/marker_cluster_layer.dart b/lib/src/marker_cluster_layer.dart
index 7f9ca8f..562c333 100755
--- a/lib/src/marker_cluster_layer.dart
+++ b/lib/src/marker_cluster_layer.dart
@@ -315,6 +315,7 @@ class _MarkerClusterLayerState extends State<MarkerClusterLayer>
     } else {
       layers.add(
         MapWidget.static(
+          key: ObjectKey(clusterNode),
           size: clusterNode.size(),
           translate: StaticTranslate(_mapCalculator, clusterNode),
           child: ClusterWidget(