diff --git a/index.d.ts b/index.d.ts
index 2a503e4..d44f0d0 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -450,7 +450,7 @@ export class CommanderError extends Error {
   // The source is a string so author can define their own too.
   export type OptionValueSource = LiteralUnion<'default' | 'config' | 'env' | 'cli' | 'implied', string> | undefined;
 
-  export type OptionValues = Record<string, any>;
+  export type OptionValues = Record<string, unknown>;
   
   export class Command<Args extends any[] = [], Opts extends OptionValues = {}> {
     args: string[];