diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4325f00..dbb3435 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,8 @@
 
 2020.12.03
 
-- 修改进程退出清理日志级别  
+- 修改 进程退出清理日志级别 
+- 增加 MIT Copyright  
 
 2020.08.23
 
diff --git a/fileboy.go b/fileboy.go
index cb7f90a..d1e8621 100644
--- a/fileboy.go
+++ b/fileboy.go
@@ -1,3 +1,7 @@
+// Copyright (c) 2018-2020 Author dengsgo<dengsgo@yoytang.com> [https://github.com/dengsgo/fileboy]
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 package main
 
 import (
diff --git a/filegirl.go b/filegirl.go
index f20fd39..6573dd5 100644
--- a/filegirl.go
+++ b/filegirl.go
@@ -1,3 +1,7 @@
+// Copyright (c) 2018-2020 Author dengsgo<dengsgo@yoytang.com> [https://github.com/dengsgo/fileboy]
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 package main
 
 type FileGirl struct {
diff --git a/notifer.go b/notifer.go
index fd48594..4e094a3 100644
--- a/notifer.go
+++ b/notifer.go
@@ -1,3 +1,7 @@
+// Copyright (c) 2018-2020 Author dengsgo<dengsgo@yoytang.com> [https://github.com/dengsgo/fileboy]
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 package main
 
 import (
diff --git a/taskman.go b/taskman.go
index a530288..ef40f99 100644
--- a/taskman.go
+++ b/taskman.go
@@ -1,3 +1,7 @@
+// Copyright (c) 2018-2020 Author dengsgo<dengsgo@yoytang.com> [https://github.com/dengsgo/fileboy]
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 package main
 
 import (