diff --git a/types/iron/index.d.ts b/types/iron/index.d.ts
index 197c3ab9a6..bf3e469e32 100644
--- a/types/iron/index.d.ts
+++ b/types/iron/index.d.ts
@@ -3,7 +3,7 @@
 // Definitions by: Simon Schick <https://github.com/simonschick>
 //                 Rafael Souza Fijalkowski <https://github.com/rafaelsouzaf>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.4
+// TypeScript Version: 2.6
 
 /// <reference types="node" />