diff --git a/src/main/java/com/alibaba/excel/util/ListUtils.java b/src/main/java/com/alibaba/excel/util/ListUtils.java
index e64acb36..1a3451d8 100644
--- a/src/main/java/com/alibaba/excel/util/ListUtils.java
+++ b/src/main/java/com/alibaba/excel/util/ListUtils.java
@@ -10,10 +10,21 @@ import lombok.NonNull;
 import org.apache.commons.compress.utils.Iterators;
 
 /**
- * List utils
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF 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
  *
- * @author Jiaju Zhuang
- **/
+ * 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.
+ *
+ * @author Apache Software Foundation (ASF)
+ */
 public class ListUtils {
     private ListUtils() {}
 
diff --git a/src/main/java/com/alibaba/excel/util/MapUtils.java b/src/main/java/com/alibaba/excel/util/MapUtils.java
index 7d049e9d..6039fbde 100644
--- a/src/main/java/com/alibaba/excel/util/MapUtils.java
+++ b/src/main/java/com/alibaba/excel/util/MapUtils.java
@@ -5,10 +5,21 @@ import java.util.LinkedHashMap;
 import java.util.TreeMap;
 
 /**
- * Map utils
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF 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
  *
- * @author Jiaju Zhuang
- **/
+ * 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.
+ *
+ * @author Apache Software Foundation (ASF)
+ */
 public class MapUtils {
 
     private MapUtils() {}