diff --git a/pkg/utils/sysctl/sysctl_linux_test.go b/pkg/utils/sysctl/sysctl_linux_test.go
index b54a8a2b..83fd60cb 100644
--- a/pkg/utils/sysctl/sysctl_linux_test.go
+++ b/pkg/utils/sysctl/sysctl_linux_test.go
@@ -1,4 +1,4 @@
-// Copyright 2017-2018 CNI authors
+// Copyright 2017-2020 CNI authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/pkg/utils/sysctl/sysctl_suite_test.go b/pkg/utils/sysctl/sysctl_suite_test.go
index e2d52be1..1c477e63 100644
--- a/pkg/utils/sysctl/sysctl_suite_test.go
+++ b/pkg/utils/sysctl/sysctl_suite_test.go
@@ -1,3 +1,17 @@
+// Copyright 2017-2020 CNI 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 sysctl_test
 
 import (