diff --git a/aqt/installer.py b/aqt/installer.py
index efa257ee..c78bbe58 100644
--- a/aqt/installer.py
+++ b/aqt/installer.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 #
 # Copyright (C) 2018 Linus Jahn <lnj@kaidan.im>
-# Copyright (C) 2019-2021,2024 Hiroshi Miura <miurahr@linux.com>
+# Copyright (C) 2019-2024 Hiroshi Miura <miurahr@linux.com>
 # Copyright (C) 2020, Aurélien Gâteau
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy of