diff --git a/vault.go b/vault.go
index b8e3bad..305c4b7 100644
--- a/vault.go
+++ b/vault.go
@@ -1,3 +1,10 @@
+// -------------------------------------------
+// Hashicorp Vault wrap/unwrap web service
+// Distributed under GNU Public License
+// Author: Sergey Kalinin svk@nuk-svk.ru
+// Home page: https://nuk-svk.ru https://git.nuk-svk.ru
+// -------------------------------------------
+
 package main
 
 import (