diff --git a/apps/emqx_audit/include/emqx_audit.hrl b/apps/emqx_audit/include/emqx_audit.hrl
index 59536def9..1b4349387 100644
--- a/apps/emqx_audit/include/emqx_audit.hrl
+++ b/apps/emqx_audit/include/emqx_audit.hrl
@@ -1,17 +1,5 @@
 %%--------------------------------------------------------------------
-%% Copyright (c) 2023 EMQ Technologies Co., Ltd. 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.
+%% Copyright (c) 2022-2023 EMQ Technologies Co., Ltd. All Rights Reserved.
 %%--------------------------------------------------------------------
 
 -define(AUDIT, emqx_audit).
diff --git a/apps/emqx_audit/src/emqx_audit.erl b/apps/emqx_audit/src/emqx_audit.erl
index debe0608b..4477bbd8b 100644
--- a/apps/emqx_audit/src/emqx_audit.erl
+++ b/apps/emqx_audit/src/emqx_audit.erl
@@ -1,17 +1,5 @@
 %%--------------------------------------------------------------------
-%% Copyright (c) 2023 EMQ Technologies Co., Ltd. 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.
+%% Copyright (c) 2022-2023 EMQ Technologies Co., Ltd. All Rights Reserved.
 %%--------------------------------------------------------------------
 
 -module(emqx_audit).
diff --git a/apps/emqx_audit/src/emqx_audit_api.erl b/apps/emqx_audit/src/emqx_audit_api.erl
index f69d5d909..aaa364464 100644
--- a/apps/emqx_audit/src/emqx_audit_api.erl
+++ b/apps/emqx_audit/src/emqx_audit_api.erl
@@ -1,18 +1,7 @@
 %%--------------------------------------------------------------------
-%% Copyright (c) 2023 EMQ Technologies Co., Ltd. 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.
+%% Copyright (c) 2022-2023 EMQ Technologies Co., Ltd. All Rights Reserved.
 %%--------------------------------------------------------------------
+
 -module(emqx_audit_api).
 
 -behaviour(minirest_api).
diff --git a/apps/emqx_audit/src/emqx_audit_app.erl b/apps/emqx_audit/src/emqx_audit_app.erl
index 2c7b086d5..aa8fa1a39 100644
--- a/apps/emqx_audit/src/emqx_audit_app.erl
+++ b/apps/emqx_audit/src/emqx_audit_app.erl
@@ -1,17 +1,5 @@
 %%--------------------------------------------------------------------
-%% Copyright (c) 2023 EMQ Technologies Co., Ltd. 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.
+%% Copyright (c) 2022-2023 EMQ Technologies Co., Ltd. All Rights Reserved.
 %%--------------------------------------------------------------------
 
 -module(emqx_audit_app).
diff --git a/apps/emqx_audit/src/emqx_audit_sup.erl b/apps/emqx_audit/src/emqx_audit_sup.erl
index 0671a9e0f..b3a5ca985 100644
--- a/apps/emqx_audit/src/emqx_audit_sup.erl
+++ b/apps/emqx_audit/src/emqx_audit_sup.erl
@@ -1,17 +1,5 @@
 %%--------------------------------------------------------------------
-%% Copyright (c) 2023 EMQ Technologies Co., Ltd. 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.
+%% Copyright (c) 2022-2023 EMQ Technologies Co., Ltd. All Rights Reserved.
 %%--------------------------------------------------------------------
 
 -module(emqx_audit_sup).