diff --git a/types/react-daum-postcode/index.d.ts b/types/react-daum-postcode/index.d.ts
index e318a0a8c3..6f3ea43b9d 100644
--- a/types/react-daum-postcode/index.d.ts
+++ b/types/react-daum-postcode/index.d.ts
@@ -2,7 +2,7 @@
 // Project: https://github.com/kimminsik-bernard/react-daum-postcode
 // Definitions by: Sa-ryong Kang <https://github.com/Sa-ryong>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.4
+// TypeScript Version: 2.3
 
 import { Component } from 'react';