diff --git a/core/src/main/java/org/opensearch/sql/utils/IPUtils.java b/core/src/main/java/org/opensearch/sql/utils/IPUtils.java
index 01bb8332c8..065f158a54 100644
--- a/core/src/main/java/org/opensearch/sql/utils/IPUtils.java
+++ b/core/src/main/java/org/opensearch/sql/utils/IPUtils.java
@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.sql.utils;
 
 import com.google.common.net.InetAddresses;