diff --git a/casdoor/permission_adapter.go b/casdoor/permission_adapter.go
index ce4ccee..8a29d34 100644
--- a/casdoor/permission_adapter.go
+++ b/casdoor/permission_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 casdoor
 
 import (
diff --git a/controllers/file.go b/controllers/file.go
index a720015..3254eba 100644
--- a/controllers/file.go
+++ b/controllers/file.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/file_cache.go b/controllers/file_cache.go
index 22988f1..92ba7d7 100644
--- a/controllers/file_cache.go
+++ b/controllers/file_cache.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/permission.go b/controllers/permission.go
index 65c652c..66dc5dc 100644
--- a/controllers/permission.go
+++ b/controllers/permission.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/provider.go b/controllers/provider.go
index 1608477..199f76c 100644
--- a/controllers/provider.go
+++ b/controllers/provider.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/store.go b/controllers/store.go
index 98a7e75..fa51e08 100644
--- a/controllers/store.go
+++ b/controllers/store.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/util.go b/controllers/util.go
index 38134fb..7a77bdd 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/controllers/util_record.go b/controllers/util_record.go
index b72a0ec..4b89d67 100644
--- a/controllers/util_record.go
+++ b/controllers/util_record.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/vectorset.go b/controllers/vectorset.go
index 3ffd4bb..61252b3 100644
--- a/controllers/vectorset.go
+++ b/controllers/vectorset.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/video.go b/controllers/video.go
index 8961ff1..87ab081 100644
--- a/controllers/video.go
+++ b/controllers/video.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/wordset.go b/controllers/wordset.go
index 34f6574..7744aa0 100644
--- a/controllers/wordset.go
+++ b/controllers/wordset.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/i18n/generate.go b/i18n/generate.go
index 28f1800..4c1cc04 100644
--- a/i18n/generate.go
+++ b/i18n/generate.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 i18n
 
 import (
diff --git a/i18n/generate_test.go b/i18n/generate_test.go
index fb23543..ad453bf 100644
--- a/i18n/generate_test.go
+++ b/i18n/generate_test.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 i18n
 
 import "testing"
diff --git a/i18n/util.go b/i18n/util.go
index 159c869..42de16c 100644
--- a/i18n/util.go
+++ b/i18n/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 i18n
 
 import (
diff --git a/object/file.go b/object/file.go
index 3f26932..ed1a010 100644
--- a/object/file.go
+++ b/object/file.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/graph.go b/object/graph.go
index c4f68a9..a79c4c8 100644
--- a/object/graph.go
+++ b/object/graph.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
 
 type Node struct {
diff --git a/object/kmeans.go b/object/kmeans.go
index 8fb2b55..8677440 100644
--- a/object/kmeans.go
+++ b/object/kmeans.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/kmeans_test.go b/object/kmeans_test.go
index afe6592..86dde5d 100644
--- a/object/kmeans_test.go
+++ b/object/kmeans_test.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 "testing"
diff --git a/object/provider.go b/object/provider.go
index e65e064..70730cc 100644
--- a/object/provider.go
+++ b/object/provider.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/store.go b/object/store.go
index c18f168..aca93df 100644
--- a/object/store.go
+++ b/object/store.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/store_provider.go b/object/store_provider.go
index b8aadd7..e13bd43 100644
--- a/object/store_provider.go
+++ b/object/store_provider.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/store_test.go b/object/store_test.go
index fbbe19f..3af256c 100644
--- a/object/store_test.go
+++ b/object/store_test.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 "testing"
diff --git a/object/vector.go b/object/vector.go
index f0a0909..e521cee 100644
--- a/object/vector.go
+++ b/object/vector.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/vectorset.go b/object/vectorset.go
index 21c494f..130f333 100644
--- a/object/vectorset.go
+++ b/object/vectorset.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/vectorset_tsne.go b/object/vectorset_tsne.go
index 7d695c9..1d91662 100644
--- a/object/vectorset_tsne.go
+++ b/object/vectorset_tsne.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/vectorset_tsne_test.go b/object/vectorset_tsne_test.go
index afadbae..7e2b424 100644
--- a/object/vectorset_tsne_test.go
+++ b/object/vectorset_tsne_test.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/vectorset_upload.go b/object/vectorset_upload.go
index 04949f5..62df85e 100644
--- a/object/vectorset_upload.go
+++ b/object/vectorset_upload.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/vectorset_upload_test.go b/object/vectorset_upload_test.go
index 20fdeeb..f8fd1ad 100644
--- a/object/vectorset_upload_test.go
+++ b/object/vectorset_upload_test.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 "testing"
diff --git a/object/video.go b/object/video.go
index e3fe256..521bd33 100644
--- a/object/video.go
+++ b/object/video.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/wordset.go b/object/wordset.go
index 70f36ca..4688876 100644
--- a/object/wordset.go
+++ b/object/wordset.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/wordset_graph.go b/object/wordset_graph.go
index 6c2de7b..e8c959e 100644
--- a/object/wordset_graph.go
+++ b/object/wordset_graph.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/wordset_match.go b/object/wordset_match.go
index 9abd04f..0754586 100644
--- a/object/wordset_match.go
+++ b/object/wordset_match.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
 
 func GetWordsetMatch(id string) (*Wordset, error) {
diff --git a/object/wordset_upload.go b/object/wordset_upload.go
index 60fca66..b08f134 100644
--- a/object/wordset_upload.go
+++ b/object/wordset_upload.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/wordset_upload_test.go b/object/wordset_upload_test.go
index 09f5f47..c3393fe 100644
--- a/object/wordset_upload_test.go
+++ b/object/wordset_upload_test.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 "testing"
diff --git a/routers/filter.go b/routers/filter.go
index 9a64292..7252c71 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 46e1ddf..c5ae4cc 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/storage/conf.go b/storage/conf.go
index c4f98af..ee7ed69 100644
--- a/storage/conf.go
+++ b/storage/conf.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 storage
 
 var endpoint = ""
diff --git a/storage/storage_test.go b/storage/storage_test.go
index f1c6f12..62c2555 100644
--- a/storage/storage_test.go
+++ b/storage/storage_test.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 storage
 
 import "testing"
diff --git a/util/file.go b/util/file.go
index e4b6fc2..d4527f0 100644
--- a/util/file.go
+++ b/util/file.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/header.go b/util/header.go
index c328d1e..cd4cee1 100644
--- a/util/header.go
+++ b/util/header.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/header_test.go b/util/header_test.go
index 843cf54..ef789f9 100644
--- a/util/header_test.go
+++ b/util/header_test.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 "testing"
diff --git a/util/ip.go b/util/ip.go
index f3944d3..8b409ff 100644
--- a/util/ip.go
+++ b/util/ip.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/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 1923dec..8411caf 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/routine.go b/util/routine.go
index 52f2ddb..9803aac 100644
--- a/util/routine.go
+++ b/util/routine.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/setting.go b/util/setting.go
index ae15f00..abd22e6 100644
--- a/util/setting.go
+++ b/util/setting.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 "fmt"
diff --git a/util/string.go b/util/string.go
index a546a30..ed3af38 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/util/time.go b/util/time.go
index 2a93b3a..13de0d0 100644
--- a/util/time.go
+++ b/util/time.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 "time"
diff --git a/video/conf.go b/video/conf.go
index 5eb7ee1..fdf6aba 100644
--- a/video/conf.go
+++ b/video/conf.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 video
 
 var regionId = ""
diff --git a/video/init.go b/video/init.go
index af8d8bb..60ccbd6 100644
--- a/video/init.go
+++ b/video/init.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 video
 
 import "github.com/aliyun/alibaba-cloud-sdk-go/services/vod"
diff --git a/video/oss_api.go b/video/oss_api.go
index ef95d52..e428fb0 100644
--- a/video/oss_api.go
+++ b/video/oss_api.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 video
 
 import (
diff --git a/video/vod_api.go b/video/vod_api.go
index eb6b642..7d3fd29 100644
--- a/video/vod_api.go
+++ b/video/vod_api.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 video
 
 import (
diff --git a/video/vod_api_test.go b/video/vod_api_test.go
index 5adaf30..a415814 100644
--- a/video/vod_api_test.go
+++ b/video/vod_api_test.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 video
 
 import "testing"
diff --git a/web/src/DataChart.js b/web/src/DataChart.js
index 8610b4b..a19b8a0 100644
--- a/web/src/DataChart.js
+++ b/web/src/DataChart.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 ReactEcharts from "echarts-for-react";
 
diff --git a/web/src/FileTable.js b/web/src/FileTable.js
index 4c14d3b..fceda07 100644
--- a/web/src/FileTable.js
+++ b/web/src/FileTable.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, Popconfirm, Table} from "antd";
 import {DeleteOutlined, DownloadOutlined, FileDoneOutlined} from "@ant-design/icons";
diff --git a/web/src/FileTree.js b/web/src/FileTree.js
index 1ef0291..eaaa5d7 100644
--- a/web/src/FileTree.js
+++ b/web/src/FileTree.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, Col, DatePicker, Descriptions, Empty, Input, Modal, Popconfirm, Radio, Row, Select, Spin, Tooltip, Tree, Upload} from "antd";
 import {CloudUploadOutlined, DeleteOutlined, DownloadOutlined, FileDoneOutlined, FolderAddOutlined, InfoCircleTwoTone, createFromIconfontCN} from "@ant-design/icons";
diff --git a/web/src/FileTreePage.js b/web/src/FileTreePage.js
index 7a1d24b..ece9eee 100644
--- a/web/src/FileTreePage.js
+++ b/web/src/FileTreePage.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 {Spin} from "antd";
 import * as StoreBackend from "./backend/StoreBackend";
diff --git a/web/src/HomePage.js b/web/src/HomePage.js
index bf38059..48b5982 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";
 import FileTreePage from "./FileTreePage";
 import {Redirect} from "react-router-dom";
diff --git a/web/src/LabelTable.js b/web/src/LabelTable.js
index 9a9a33f..67d025b 100644
--- a/web/src/LabelTable.js
+++ b/web/src/LabelTable.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 {DeleteOutlined} from "@ant-design/icons";
 import {Button, Col, Input, InputNumber, Row, Table, Tooltip} from "antd";
diff --git a/web/src/LanguageSelect.js b/web/src/LanguageSelect.js
index 9e44563..d3aedea 100644
--- a/web/src/LanguageSelect.js
+++ b/web/src/LanguageSelect.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/PermissionUtil.js b/web/src/PermissionUtil.js
index f4d260d..f7d765d 100644
--- a/web/src/PermissionUtil.js
+++ b/web/src/PermissionUtil.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 PermissionBackend from "./backend/PermissionBackend";
 import * as Setting from "./Setting";
 import moment from "moment";
diff --git a/web/src/ProviderEditPage.js b/web/src/ProviderEditPage.js
index aeb8a55..03438f8 100644
--- a/web/src/ProviderEditPage.js
+++ b/web/src/ProviderEditPage.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, Input, Row, Select} from "antd";
 import * as ProviderBackend from "./backend/ProviderBackend";
diff --git a/web/src/ProviderListPage.js b/web/src/ProviderListPage.js
index fcf28fe..dc88257 100644
--- a/web/src/ProviderListPage.js
+++ b/web/src/ProviderListPage.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/Setting.js b/web/src/Setting.js
index 67fda3a..dc27c4b 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 {Tag, Tooltip, message} from "antd";
 import {SyncOutlined} from "@ant-design/icons";
 import {isMobile as isMobileDevice} from "react-device-detect";
diff --git a/web/src/SigninPage.js b/web/src/SigninPage.js
index decfaa4..313a581 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/StoreEditPage.js b/web/src/StoreEditPage.js
index d3938a9..e16eb2e 100644
--- a/web/src/StoreEditPage.js
+++ b/web/src/StoreEditPage.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, Input, Row} from "antd";
 import {LinkOutlined} from "@ant-design/icons";
diff --git a/web/src/StoreListPage.js b/web/src/StoreListPage.js
index 2667d50..208489a 100644
--- a/web/src/StoreListPage.js
+++ b/web/src/StoreListPage.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/VectorTable.js b/web/src/VectorTable.js
index b473279..68ee574 100644
--- a/web/src/VectorTable.js
+++ b/web/src/VectorTable.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 {DeleteOutlined, DownOutlined, UpOutlined} from "@ant-design/icons";
 import {Button, Col, Input, Row, Table, Tooltip} from "antd";
diff --git a/web/src/VectorsetEditPage.js b/web/src/VectorsetEditPage.js
index 92b2417..5869b6b 100644
--- a/web/src/VectorsetEditPage.js
+++ b/web/src/VectorsetEditPage.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, Input, InputNumber, Row} from "antd";
 import * as VectorsetBackend from "./backend/VectorsetBackend";
diff --git a/web/src/VectorsetListPage.js b/web/src/VectorsetListPage.js
index 62ebafb..59ea9e6 100644
--- a/web/src/VectorsetListPage.js
+++ b/web/src/VectorsetListPage.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/Video.js b/web/src/Video.js
index 3e0061e..e5f5154 100644
--- a/web/src/Video.js
+++ b/web/src/Video.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 Player from "aliplayer-react";
 import * as Setting from "./Setting";
diff --git a/web/src/VideoDataChart.js b/web/src/VideoDataChart.js
index 40b3652..1a1eaca 100644
--- a/web/src/VideoDataChart.js
+++ b/web/src/VideoDataChart.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 ReactEcharts from "echarts-for-react";
 
diff --git a/web/src/VideoEditPage.js b/web/src/VideoEditPage.js
index a6f4ce2..7ac0dc2 100644
--- a/web/src/VideoEditPage.js
+++ b/web/src/VideoEditPage.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 {Affix, Button, Card, Col, Input, Row, Select, Switch} from "antd";
 import * as VideoBackend from "./backend/VideoBackend";
diff --git a/web/src/VideoListPage.js b/web/src/VideoListPage.js
index 96b8e2b..fb40f02 100644
--- a/web/src/VideoListPage.js
+++ b/web/src/VideoListPage.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, Upload} from "antd";
diff --git a/web/src/WordsetEditPage.js b/web/src/WordsetEditPage.js
index 4c10748..29d44fc 100644
--- a/web/src/WordsetEditPage.js
+++ b/web/src/WordsetEditPage.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, Input, InputNumber, Row, Select} from "antd";
 import * as WordsetBackend from "./backend/WordsetBackend";
diff --git a/web/src/WordsetGraph.js b/web/src/WordsetGraph.js
index 7817020..aaf6679 100644
--- a/web/src/WordsetGraph.js
+++ b/web/src/WordsetGraph.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, Empty, InputNumber, List, Row, Select, Slider, Spin, Switch, Tooltip} from "antd";
 import ForceGraph2D from "react-force-graph-2d";
diff --git a/web/src/WordsetGraphPage.js b/web/src/WordsetGraphPage.js
index bdba751..20a5c05 100644
--- a/web/src/WordsetGraphPage.js
+++ b/web/src/WordsetGraphPage.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 WordsetBackend from "./backend/WordsetBackend";
 import WordsetGraph from "./WordsetGraph";
diff --git a/web/src/WordsetListPage.js b/web/src/WordsetListPage.js
index 53845d7..9f4856e 100644
--- a/web/src/WordsetListPage.js
+++ b/web/src/WordsetListPage.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/backend/FileBackend.js b/web/src/backend/FileBackend.js
index 63f831d..7875664 100644
--- a/web/src/backend/FileBackend.js
+++ b/web/src/backend/FileBackend.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 updateFile(storeId, name, file) {
diff --git a/web/src/backend/PermissionBackend.js b/web/src/backend/PermissionBackend.js
index f91420b..6e331da 100644
--- a/web/src/backend/PermissionBackend.js
+++ b/web/src/backend/PermissionBackend.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 getGlobalPermissions() {
diff --git a/web/src/backend/ProviderBackend.js b/web/src/backend/ProviderBackend.js
index a72abea..b3b60ef 100644
--- a/web/src/backend/ProviderBackend.js
+++ b/web/src/backend/ProviderBackend.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 getGlobalProviders() {
diff --git a/web/src/backend/StoreBackend.js b/web/src/backend/StoreBackend.js
index d0b9be7..2a9a672 100644
--- a/web/src/backend/StoreBackend.js
+++ b/web/src/backend/StoreBackend.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 getGlobalStores() {
diff --git a/web/src/backend/VectorsetBackend.js b/web/src/backend/VectorsetBackend.js
index 6ccc95f..4c96ce2 100644
--- a/web/src/backend/VectorsetBackend.js
+++ b/web/src/backend/VectorsetBackend.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 getGlobalVectorsets() {
diff --git a/web/src/backend/VideoBackend.js b/web/src/backend/VideoBackend.js
index e6dba92..fcf6160 100644
--- a/web/src/backend/VideoBackend.js
+++ b/web/src/backend/VideoBackend.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 getGlobalVideos() {
diff --git a/web/src/backend/WordsetBackend.js b/web/src/backend/WordsetBackend.js
index ec3cdfc..d0ea943 100644
--- a/web/src/backend/WordsetBackend.js
+++ b/web/src/backend/WordsetBackend.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 getGlobalWordsets() {
diff --git a/web/src/i18n.js b/web/src/i18n.js
index 59a2fbc..e557b5d 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 03aaec8..1d41e75 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/xuexia/p/12092768.html
 // react-app-polyfill
diff --git a/web/src/serviceWorker.js b/web/src/serviceWorker.js
index 2a99f32..bd2dfcf 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.
 
diff --git a/xlsx/xlsx.go b/xlsx/xlsx.go
index eb8fcf4..7a32120 100644
--- a/xlsx/xlsx.go
+++ b/xlsx/xlsx.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 xlsx
 
 import (