diff --git a/joi/joi.d.ts b/joi/joi.d.ts
index 344738e89..10bc7225e 100644
--- a/joi/joi.d.ts
+++ b/joi/joi.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for joi v3.1.0
+// Type definitions for joi v4.0.0
 // Project: https://github.com/spumko/joi
 // Definitions by: Bart van der Schoor <https://github.com/Bartvds>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped