diff --git a/attestation/environment/obfuscate.go b/attestation/environment/obfuscate.go
index 5e681438..6898cb00 100644
--- a/attestation/environment/obfuscate.go
+++ b/attestation/environment/obfuscate.go
@@ -1,4 +1,4 @@
-// Copyright 2021 The Witness Contributors
+// Copyright 2024 The Witness Contributors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.