diff --git a/LICENSE b/LICENSE
index de663311..1cc22a5a 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2010-2020 Benjamin Peterson
+Copyright (c) 2010-2024 Benjamin Peterson
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in
diff --git a/documentation/conf.py b/documentation/conf.py
index 2f0f3238..b6e3b123 100644
--- a/documentation/conf.py
+++ b/documentation/conf.py
@@ -33,7 +33,7 @@
 
 # General information about the project.
 project = u"six"
-copyright = u"2010-2020, Benjamin Peterson"
+copyright = u"2010-2024, Benjamin Peterson"
 
 sys.path.append(os.path.abspath(os.path.join(".", "..")))
 from six import __version__ as six_version
diff --git a/setup.py b/setup.py
index d90958b6..660cf397 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2010-2020 Benjamin Peterson
+# Copyright (c) 2010-2024 Benjamin Peterson
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
diff --git a/six.py b/six.py
index f1d5cd6e..d92b1b10 100644
--- a/six.py
+++ b/six.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2010-2020 Benjamin Peterson
+# Copyright (c) 2010-2024 Benjamin Peterson
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
diff --git a/test_six.py b/test_six.py
index 4a911b6f..8890c0e3 100644
--- a/test_six.py
+++ b/test_six.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2010-2020 Benjamin Peterson
+# Copyright (c) 2010-2024 Benjamin Peterson
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal