diff --git a/src/PyPop/citation.py b/src/PyPop/citation.py
index 7d0cadc08..7a8632e38 100644
--- a/src/PyPop/citation.py
+++ b/src/PyPop/citation.py
@@ -2,7 +2,7 @@
 
 # This file is part of PyPop
 
-# Copyright (C) 2017. 
+# Copyright (C) 2024.
 # All Rights Reserved.
 
 # This program is free software; you can redistribute it and/or modify