diff --git a/types/mongo-sanitize/index.d.ts b/types/mongo-sanitize/index.d.ts
index aedff46b0b..1c5308d55c 100644
--- a/types/mongo-sanitize/index.d.ts
+++ b/types/mongo-sanitize/index.d.ts
@@ -2,7 +2,7 @@
 // Project: https://github.com/vkarpov15/mongo-sanitize
 // Definitions by: Cedric Cazin <https://github.com/CedricCazin>, Olga Isakova <https://github.com/penumbra1>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 3.3
+// TypeScript Version: 2.3
 
 declare function sanitize<T>(v: T): T;