diff --git a/dist/extension/dataTool.js b/dist/extension/dataTool.js
index 8107ffcbd0dae921c6e21602ae67354e226d2466..84714a8fcc3a2da9d4a291331c41880fbf146d87 100644
--- a/dist/extension/dataTool.js
+++ b/dist/extension/dataTool.js
@@ -1,3 +1,23 @@
+
+/*
+* 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
+*
+* 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.
+*/
+
 (function (global, factory) {
 	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('echarts')) :
 	typeof define === 'function' && define.amd ? define(['exports', 'echarts'], factory) :