diff --git a/packages/core/src/prompts/prompt.ts b/packages/core/src/prompts/prompt.ts
index 5d6f68a..0b6fe79 100644
--- a/packages/core/src/prompts/prompt.ts
+++ b/packages/core/src/prompts/prompt.ts
@@ -41,7 +41,7 @@ export interface PromptOptions<Self extends Prompt> {
 	render(this: Omit<Self, 'prompt'>): string | void;
 	placeholder?: string;
 	initialValue?: any;
-	validate?: ((value: string) => string | void) | undefined;
+	validate?: ((value: any) => string | void) | undefined;
 	input?: Readable;
 	output?: Writable;
 	debug?: boolean;