diff --git a/sync/lock.go b/sync/lock.go
index cd83df6..0156831 100644
--- a/sync/lock.go
+++ b/sync/lock.go
@@ -1,3 +1,6 @@
+// Copyright © 2025 Prabhjot Singh Sethi, All Rights reserved
+// Author: Prabhjot Singh Sethi <prabhjot.sethi@gmail.com>
+
 package sync
 
 import (
diff --git a/sync/test/example.go b/sync/test/example.go
index 715f436..832a6de 100644
--- a/sync/test/example.go
+++ b/sync/test/example.go
@@ -1,3 +1,6 @@
+// Copyright © 2025 Prabhjot Singh Sethi, All Rights reserved
+// Author: Prabhjot Singh Sethi <prabhjot.sethi@gmail.com>
+
 package main
 
 import (