diff --git a/core/store/serializers/src/main/java/org/onosproject/store/serializers/KryoNamespaces.java b/core/store/serializers/src/main/java/org/onosproject/store/serializers/KryoNamespaces.java
index aac942f..ced6954 100644
--- a/core/store/serializers/src/main/java/org/onosproject/store/serializers/KryoNamespaces.java
+++ b/core/store/serializers/src/main/java/org/onosproject/store/serializers/KryoNamespaces.java
@@ -218,6 +218,7 @@
 import org.onosproject.store.service.Task;
 import org.onosproject.store.service.Versioned;
 import org.onosproject.store.service.WorkQueueStats;
+import org.onosproject.ui.model.topo.UiTopoLayoutId;
 
 import java.net.URI;
 import java.time.Duration;
@@ -513,6 +514,7 @@
             .register(Region.Type.class)
             .register(RegionId.class)
             .register(DefaultRegion.class)
+            .register(UiTopoLayoutId.class)
             .register(ExtensionSelectorType.class)
             .register(ExtensionTreatmentType.class)
             .register(TransactionId.class)