diff --git a/metricbeat/module/system/socket_summary/socket_summary.go b/metricbeat/module/system/socket_summary/socket_summary.go
index 8d1a23ef333..a1d13a75862 100644
--- a/metricbeat/module/system/socket_summary/socket_summary.go
+++ b/metricbeat/module/system/socket_summary/socket_summary.go
@@ -1,3 +1,20 @@
+// Licensed to Elasticsearch B.V. under one or more contributor
+// license agreements. See the NOTICE file distributed with
+// this work for additional information regarding copyright
+// ownership. Elasticsearch B.V. licenses this file to you 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 socket_summary
 
 import (
diff --git a/metricbeat/module/system/socket_summary/socket_summary_test.go b/metricbeat/module/system/socket_summary/socket_summary_test.go
index 5a5387a97a2..22f97df283e 100644
--- a/metricbeat/module/system/socket_summary/socket_summary_test.go
+++ b/metricbeat/module/system/socket_summary/socket_summary_test.go
@@ -1,3 +1,20 @@
+// Licensed to Elasticsearch B.V. under one or more contributor
+// license agreements. See the NOTICE file distributed with
+// this work for additional information regarding copyright
+// ownership. Elasticsearch B.V. licenses this file to you 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 socket_summary
 
 import (