diff --git a/types/vue.d.ts b/types/vue.d.ts
index 574d50a6df1..7adb5a53aec 100644
--- a/types/vue.d.ts
+++ b/types/vue.d.ts
@@ -26,7 +26,7 @@ export interface Vue {
   readonly $parent: Vue;
   readonly $root: Vue;
   readonly $children: Vue[];
-  readonly $refs: { [key: string]: Vue | Element | Vue[] | Element[] };
+  readonly $refs: { [key: string]: Vue | Element | (Vue | Element)[] | undefined };
   readonly $slots: { [key: string]: VNode[] | undefined };
   readonly $scopedSlots: { [key: string]: NormalizedScopedSlot | undefined };
   readonly $isServer: boolean;