diff --git a/packages/core/src/types/changes.ts b/packages/core/src/types/changes.ts
index 78060f58..d2f93dcf 100644
--- a/packages/core/src/types/changes.ts
+++ b/packages/core/src/types/changes.ts
@@ -17,7 +17,7 @@ export interface NodeDragItem {
 export interface NodeDimensionChange {
   id: string
   type: 'dimensions'
-  dimensions: Dimensions
+  dimensions?: Dimensions
   handleBounds?: NodeHandleBounds
   updateStyle?: boolean
   resizing?: boolean