diff --git a/src/locale.ts b/src/locale.ts
index 6f8a20d7..d097c838 100644
--- a/src/locale.ts
+++ b/src/locale.ts
@@ -66,6 +66,7 @@ export interface LocaleObject {
   boolean?: BooleanLocale;
   object?: ObjectLocale;
   array?: ArrayLocale;
+  tuple?: TupleLocale;
 }
 
 export let mixed: Required<MixedLocale> = {
@@ -160,4 +161,5 @@ export default Object.assign(Object.create(null), {
   object,
   array,
   boolean,
+  tuple,
 }) as LocaleObject;