diff --git a/date-fns/index.d.ts b/date-fns/index.d.ts
index d0582c2571..bb78fe74e2 100644
--- a/date-fns/index.d.ts
+++ b/date-fns/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for date-fns
+// Type definitions for date-fns v2.5.1
 // Project: https://date-fns.org/
 // Definitions by: Matt Lewis <https://github.com/mattlewis92>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped