diff --git a/LICENSE.txt b/LICENSE.txt
index d68b3a4..1a92f5d 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -1,5 +1,5 @@
 Copyright 2020 Istvan Ruzman. All rights reserved.
-Copyright 2017-2020 Christian Giese. All rights reserved.
+Copyright 2017-2023 Christian Giese. All rights reserved.
 Copyright 2007-2008 Simplon. All rights reserved.
 Copyright 2002-2008 Wichert Akkerman. All rights reserved.
 
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 4def982..7d15d8e 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -49,8 +49,8 @@
 
 # General information about the project.
 project = u'pyrad'
-copyright = u'Copyright 2002-2020 Wichert Akkerman, Istvan Ruzman and Christian Giese. All rights reserved.'
-author = u'Christian Giese <developer@gicnet.de> and Istvan Ruzman <istvan@ruzman.eu>'
+copyright = u'Copyright 2002-2023 Wichert Akkerman, Istvan Ruzman and Christian Giese. All rights reserved.'
+author = u'Christian Giese <gic@gicnet.de> and Istvan Ruzman <istvan@ruzman.eu>'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
diff --git a/pyrad/__init__.py b/pyrad/__init__.py
index feb21f8..56f924e 100644
--- a/pyrad/__init__.py
+++ b/pyrad/__init__.py
@@ -40,7 +40,7 @@
 
 __author__ = 'Christian Giese <developer@gicnet.de>'
 __url__ = 'http://pyrad.readthedocs.io/en/latest/?badge=latest'
-__copyright__ = 'Copyright 2002-2020 Wichert Akkerman and Christian Giese. All rights reserved.'
+__copyright__ = 'Copyright 2002-2023 Wichert Akkerman, Istvan Ruzman and Christian Giese. All rights reserved.'
 __version__ = '2.4'
 
 __all__ = ['client', 'dictionary', 'packet', 'server', 'tools', 'dictfile']