diff --git a/tools/rw-benchmark/linkedmap.go b/tools/rw-benchmark/linkedmap.go
index d101e24cd3d2..cba2e3cc3d2c 100644
--- a/tools/rw-benchmark/linkedmap.go
+++ b/tools/rw-benchmark/linkedmap.go
@@ -1,5 +1,16 @@
-// Copyright (c) 2019, Benjamin Wang (benjamin_wang@aliyun.com). All rights reserved.
-// Licensed under the MIT license that can be found in the LICENSE file.
+// Copyright 2022 The etcd 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
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
 
 // Package linkedmap implements a linked hashmap, based on a map and a doubly linked list. The iteration ordering is normally
 // the order in which keys were inserted into the map, or the order in which the keys were accessed if the accessOrder flag is set.
diff --git a/tools/rw-benchmark/linkedmap_test.go b/tools/rw-benchmark/linkedmap_test.go
index 0dae405373f0..ae8c4271fa2f 100644
--- a/tools/rw-benchmark/linkedmap_test.go
+++ b/tools/rw-benchmark/linkedmap_test.go
@@ -1,5 +1,16 @@
-// Copyright (c) 2019, Benjamin Wang (benjamin_wang@aliyun.com). All rights reserved.
-// Licensed under the MIT license that can be found in the LICENSE file.
+// Copyright 2022 The etcd 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
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
 
 package main