diff --git a/types/yeoman-generator/index.d.ts b/types/yeoman-generator/index.d.ts
index fb5c1b881c..9db6a70946 100644
--- a/types/yeoman-generator/index.d.ts
+++ b/types/yeoman-generator/index.d.ts
@@ -4,7 +4,7 @@
 //                 Jay Anslow <https://github.com/janslow>
 //                 Ika <https://github.com/ikatyang>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.2
+// TypeScript Version: 2.3
 
 import { EventEmitter } from 'events';
 import * as inquirer from 'inquirer';
diff --git a/types/yeoman-test/index.d.ts b/types/yeoman-test/index.d.ts
index 7602d94a87..d6b2d50a09 100644
--- a/types/yeoman-test/index.d.ts
+++ b/types/yeoman-test/index.d.ts
@@ -2,7 +2,7 @@
 // Project: https://github.com/yeoman/yeoman-test
 // Definitions by: Ika <https://github.com/ikatyang>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.2
+// TypeScript Version: 2.3
 
 import { EventEmitter } from 'events';
 import Generator = require('yeoman-generator');