diff --git a/react-native-datepicker/index.d.ts b/react-native-datepicker/index.d.ts
index ef985ecdc5..232f2f56d1 100644
--- a/react-native-datepicker/index.d.ts
+++ b/react-native-datepicker/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/xgfe/react-native-datepicker
 // Definitions by: Jacob Baskin <https://github.com/jacobbaskin>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.1
 
 import * as React from 'react';