diff --git a/controllers/account.go b/controllers/account.go
index a337087..7a503c3 100644
--- a/controllers/account.go
+++ b/controllers/account.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 controllers
 
 import (
diff --git a/controllers/base.go b/controllers/base.go
index 6d6c068..83e430d 100644
--- a/controllers/base.go
+++ b/controllers/base.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 controllers
 
 import (
diff --git a/controllers/dataset.go b/controllers/dataset.go
index 6431b32..bdfc59f 100644
--- a/controllers/dataset.go
+++ b/controllers/dataset.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 controllers
 
 import (
diff --git a/controllers/default.go b/controllers/default.go
index 4a769aa..3753e26 100644
--- a/controllers/default.go
+++ b/controllers/default.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 controllers
 
 func (c *ApiController) GetPosts() {
diff --git a/controllers/util.go b/controllers/util.go
index 5b651ea..8971eea 100644
--- a/controllers/util.go
+++ b/controllers/util.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 controllers
 
 type Response struct {
diff --git a/main.go b/main.go
index 0c15be2..6ba26dd 100644
--- a/main.go
+++ b/main.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 main
 
 import (
diff --git a/object/adapter.go b/object/adapter.go
index cd42df3..690cfd5 100644
--- a/object/adapter.go
+++ b/object/adapter.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 object
 
 import (
diff --git a/object/dataset.go b/object/dataset.go
index 039b4f1..a501425 100644
--- a/object/dataset.go
+++ b/object/dataset.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 object
 
 import (
diff --git a/routers/filter.go b/routers/filter.go
index d90b7fb..2de60aa 100644
--- a/routers/filter.go
+++ b/routers/filter.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 routers
 
 import (
diff --git a/routers/router.go b/routers/router.go
index ba9ddfd..eabb820 100644
--- a/routers/router.go
+++ b/routers/router.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 routers
 
 import (
diff --git a/util/header.go b/util/header.go
new file mode 100644
index 0000000..cd4cee1
--- /dev/null
+++ b/util/header.go
@@ -0,0 +1,67 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 util
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+var licenseText = `// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
+`
+
+func updateAllHeaders() {
+	err := filepath.Walk("../", func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+
+		if !info.IsDir() && (strings.HasSuffix(path, ".go") || strings.HasSuffix(path, ".js") && !strings.Contains(path, "node_modules")) {
+			data, err := os.ReadFile(path)
+			if err != nil {
+				return err
+			}
+
+			if !strings.Contains(string(data), "Licensed under the Apache License") {
+				newData := licenseText + string(data)
+				err = os.WriteFile(path, []byte(newData), info.Mode())
+				if err != nil {
+					return err
+				}
+
+				fmt.Printf("Handled path: [%s]\n", path)
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		panic(err)
+	}
+}
diff --git a/util/header_test.go b/util/header_test.go
new file mode 100644
index 0000000..ef789f9
--- /dev/null
+++ b/util/header_test.go
@@ -0,0 +1,21 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 util
+
+import "testing"
+
+func TestUpdateAllHeaders(t *testing.T) {
+	updateAllHeaders()
+}
diff --git a/util/json.go b/util/json.go
index 1383dc2..abeb0e1 100644
--- a/util/json.go
+++ b/util/json.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 util
 
 import "encoding/json"
diff --git a/util/path.go b/util/path.go
index 734a9ab..e10df06 100644
--- a/util/path.go
+++ b/util/path.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 util
 
 import (
diff --git a/util/string.go b/util/string.go
index 57b429a..e88b204 100644
--- a/util/string.go
+++ b/util/string.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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 util
 
 import (
diff --git a/web/craco.config.js b/web/craco.config.js
index b873f56..2d1256a 100644
--- a/web/craco.config.js
+++ b/web/craco.config.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 const CracoLessPlugin = require('craco-less');
 
 module.exports = {
diff --git a/web/src/App.js b/web/src/App.js
index ea8c6bc..44b557c 100644
--- a/web/src/App.js
+++ b/web/src/App.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 import React, {Component} from 'react';
 import {Switch, Redirect, Route, withRouter, Link} from 'react-router-dom';
 import {Avatar, BackTop, Dropdown, Layout, Menu} from 'antd';
diff --git a/web/src/App.test.js b/web/src/App.test.js
index a754b20..65651d4 100644
--- a/web/src/App.test.js
+++ b/web/src/App.test.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 import React from 'react';
 import ReactDOM from 'react-dom';
 import App from './App';
diff --git a/web/src/AuthCallback.js b/web/src/AuthCallback.js
index f50af6a..0255d8e 100644
--- a/web/src/AuthCallback.js
+++ b/web/src/AuthCallback.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 import React from "react";
 import { Button, Result, Spin } from "antd";
 import { withRouter } from "react-router-dom";
diff --git a/web/src/Conf.js b/web/src/Conf.js
index 7e5e7ba..6edfa29 100644
--- a/web/src/Conf.js
+++ b/web/src/Conf.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 export const AuthConfig = {
   // serverUrl: "https://door.casdoor.com",
   serverUrl: "http://localhost:7001",
diff --git a/web/src/DatasetEditPage.js b/web/src/DatasetEditPage.js
index 5bb053d..0a7e43f 100644
--- a/web/src/DatasetEditPage.js
+++ b/web/src/DatasetEditPage.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 import React from "react";
 import {Button, Card, Col, DatePicker, Input, Row, Select} from 'antd';
 import * as DatasetBackend from "./backend/DatasetBackend";
diff --git a/web/src/DatasetListPage.js b/web/src/DatasetListPage.js
index 0d0b628..9f4bb6d 100644
--- a/web/src/DatasetListPage.js
+++ b/web/src/DatasetListPage.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 import React from "react";
 import {Link} from "react-router-dom";
 import {Button, Col, Popconfirm, Row, Table} from 'antd';
diff --git a/web/src/HomePage.js b/web/src/HomePage.js
index 4a2c849..1c110f8 100644
--- a/web/src/HomePage.js
+++ b/web/src/HomePage.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 import React from "react";
 
 class HomePage extends React.Component {
diff --git a/web/src/SelectLanguageBox.js b/web/src/SelectLanguageBox.js
index 77cc7f7..92151da 100644
--- a/web/src/SelectLanguageBox.js
+++ b/web/src/SelectLanguageBox.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 import React from "react";
 import * as Setting from "./Setting";
 import {Dropdown, Menu} from "antd";
diff --git a/web/src/Setting.js b/web/src/Setting.js
index 94b66e6..9b60d44 100644
--- a/web/src/Setting.js
+++ b/web/src/Setting.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 import {message} from "antd";
 import {isMobile as isMobileDevice} from "react-device-detect";
 import i18next from "i18next";
diff --git a/web/src/SigninPage.js b/web/src/SigninPage.js
index 7933948..0c7c98d 100644
--- a/web/src/SigninPage.js
+++ b/web/src/SigninPage.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 import React from 'react';
 import * as Setting from "./Setting";
 
diff --git a/web/src/backend/AccountBackend.js b/web/src/backend/AccountBackend.js
index fb4dc6c..6f5e780 100644
--- a/web/src/backend/AccountBackend.js
+++ b/web/src/backend/AccountBackend.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 import * as Setting from "../Setting";
 
 export function getAccount() {
diff --git a/web/src/backend/DatasetBackend.js b/web/src/backend/DatasetBackend.js
index b0f2b04..5397162 100644
--- a/web/src/backend/DatasetBackend.js
+++ b/web/src/backend/DatasetBackend.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 import * as Setting from "../Setting";
 
 export function getGlobalDatasets() {
diff --git a/web/src/i18n.js b/web/src/i18n.js
index 9340ca6..73907b3 100644
--- a/web/src/i18n.js
+++ b/web/src/i18n.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 import i18n from "i18next";
 import zh from "./locales/zh/data.json";
 import en from "./locales/en/data.json";
diff --git a/web/src/index.js b/web/src/index.js
index 3872f7a..472de29 100644
--- a/web/src/index.js
+++ b/web/src/index.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 // create-react-app + IE9
 // https://www.cnblogs.com/yeduweichengzhaoyu/p/12092768.html
 // react-app-polyfill
diff --git a/web/src/serviceWorker.js b/web/src/serviceWorker.js
index f8c7e50..c08963c 100644
--- a/web/src/serviceWorker.js
+++ b/web/src/serviceWorker.js
@@ -1,3 +1,17 @@
+// Copyright 2023 The casbin Authors. All Rights Reserved.
+//
+// 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.
+
 // This optional code is used to register a service worker.
 // register() is not called by default.