diff --git a/src/types/index.ts b/src/types/index.ts
index cd3fc9d..c1e39c5 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -13,3 +13,4 @@ export * from './replace';
 export * from './requireOnly';
 export * from './resolvePromise';
 export * from './reverseMap';
+export * from './valueOf';