diff --git a/types/mongodb/index.d.ts b/types/mongodb/index.d.ts
index 02208e721b..b1f85ed22c 100644
--- a/types/mongodb/index.d.ts
+++ b/types/mongodb/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/mongodb/node-mongodb-native/tree/2.2
 // Definitions by: Federico Caselli <https://github.com/CaselIT>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.3
 
 // Documentation : http://mongodb.github.io/node-mongodb-native/2.2/api/