diff --git a/model/labels/labels_dedupelabels.go b/model/labels/labels_dedupelabels.go
index 2306d38d1..0cf2eb599 100644
--- a/model/labels/labels_dedupelabels.go
+++ b/model/labels/labels_dedupelabels.go
@@ -1,4 +1,4 @@
-// Copyright 2017 The Prometheus Authors
+// Copyright 2024 The Prometheus Authors
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
diff --git a/model/labels/sharding_dedupelabels.go b/model/labels/sharding_dedupelabels.go
index a4ff28512..5912724f9 100644
--- a/model/labels/sharding_dedupelabels.go
+++ b/model/labels/sharding_dedupelabels.go
@@ -1,4 +1,4 @@
-// Copyright 2020 The Prometheus Authors
+// Copyright 2024 The Prometheus Authors
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at