diff --git a/src/mini-van.d.ts b/src/mini-van.d.ts
index 0c35e4c..9cdfa36 100644
--- a/src/mini-van.d.ts
+++ b/src/mini-van.d.ts
@@ -9,7 +9,7 @@ export type StateView<T> = Readonly<State<T>>
 
 export type Primitive = string | number | boolean | bigint
 
-export type PropValue = Primitive | ((e: any) => void) | null
+export type PropValue = Primitive | ((e: any) => void) | null | undefined
 
 export type Props = Record<string, PropValue | StateView<PropValue> | (() => PropValue)>
 
diff --git a/src/van-plate.d.ts b/src/van-plate.d.ts
index a544379..9418bfc 100644
--- a/src/van-plate.d.ts
+++ b/src/van-plate.d.ts
@@ -9,7 +9,7 @@ export type StateView<T> = Readonly<State<T>>
 
 export type Primitive = string | number | boolean | bigint
 
-export type PropValue = Primitive | ((e: any) => void) | null
+export type PropValue = Primitive | ((e: any) => void) | null | undefined
 
 export type Props = Record<string, PropValue | StateView<PropValue> | (() => PropValue)>