diff --git a/types/wpapi/index.d.ts b/types/wpapi/index.d.ts
index cbaee37286..9c0d635e5d 100644
--- a/types/wpapi/index.d.ts
+++ b/types/wpapi/index.d.ts
@@ -1,4 +1,5 @@
 // Type definitions for wpapi 1.1
+// TypeScript Version: 2.2
 // Project: https://github.com/wp-api/node-wpapi
 // Definitions by: Guo Yunhe <https://github.com/guoyunhe>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped