diff --git a/packages/core/src/types/store.ts b/packages/core/src/types/store.ts
index cce33aa0..81f25184 100644
--- a/packages/core/src/types/store.ts
+++ b/packages/core/src/types/store.ts
@@ -183,11 +183,11 @@ export type UpdateNodeDimensions = (updates: UpdateNodeDimensionsParams[]) => vo
 export type UpdateNodeInternals = (nodeIds?: string[]) => void
 
 export type FindNode = <Data = ElementData, CustomEvents extends Record<string, CustomEvent> = any>(
-  id: string | undefined,
+  id: string | undefined | null,
 ) => GraphNode<Data, CustomEvents> | undefined
 
 export type FindEdge = <Data = ElementData, CustomEvents extends Record<string, CustomEvent> = any>(
-  id: string | undefined,
+  id: string | undefined | null,
 ) => GraphEdge<Data, CustomEvents> | undefined
 
 export type GetIntersectingNodes = (