diff --git a/docs/en/COPYRIGHT.rst b/docs/en/COPYRIGHT.rst
index b534c9add6..528f334a06 100644
--- a/docs/en/COPYRIGHT.rst
+++ b/docs/en/COPYRIGHT.rst
@@ -4,7 +4,7 @@ Copyrights and Licenses
 Software Copyrights
 ===================
 
-All original source code in this repository is Copyright (C) 2015-2019 Espressif Systems. This source code is licensed under the Apache License 2.0 as described in the file LICENSE.
+All original source code in this repository is Copyright (C) 2015-2022 Espressif Systems. This source code is licensed under the Apache License 2.0 as described in the file LICENSE.
 
 Additional third party copyrighted code is included under the following licenses.
 
diff --git a/docs/en/conf.py b/docs/en/conf.py
index eb43458dda..0d7472f02a 100644
--- a/docs/en/conf.py
+++ b/docs/en/conf.py
@@ -14,9 +14,13 @@ except ImportError:
     sys.path.insert(0, os.path.abspath('..'))
     from conf_common import *  # noqa: F403,F401
 
+import datetime
+
+current_year = datetime.datetime.now().year
+
 # General information about the project.
 project = u'ESP-IDF Programming Guide'
-copyright = u'2016 - 2021, Espressif Systems (Shanghai) Co., Ltd'
+copyright = u'2016 - {}, Espressif Systems (Shanghai) Co., Ltd'.format(current_year)
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/docs/zh_CN/conf.py b/docs/zh_CN/conf.py
index a13d6d79f9..cc6fbc2712 100644
--- a/docs/zh_CN/conf.py
+++ b/docs/zh_CN/conf.py
@@ -14,9 +14,13 @@ except ImportError:
     sys.path.insert(0, os.path.abspath('..'))
     from conf_common import *  # noqa: F403,F401
 
+import datetime
+
+current_year = datetime.datetime.now().year
+
 # General information about the project.
 project = u'ESP-IDF 编程指南'
-copyright = u'2016 - 2021 乐鑫信息科技（上海）股份有限公司'
+copyright = u'2016 - {} 乐鑫信息科技（上海）股份有限公司'.format(current_year)
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.