diff --git a/README.md b/README.md
index b60d84df..c0227fc7 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 [![JavaPermutationTools - A Java library for computation on permutations and sequences](https://jpt.cicirello.org/images/jpt640.png)](#javapermutationtools-jpt-a-java-library-for-computation-on-permutations-and-sequences)
 
-Copyright (C) 2018-2022 [Vincent A. Cicirello](https://www.cicirello.org/).
+Copyright (C) 2018-2023 [Vincent A. Cicirello](https://www.cicirello.org/).
 
 Website: https://jpt.cicirello.org/
 
diff --git a/pom.xml b/pom.xml
index 8b73c643..7e47b9b5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -30,7 +30,7 @@
 			<distribution>repo</distribution>
 			<comments>
 			JavaPermutationTools (JPT): A library for computation on permutations and sequences.
-			Copyright (C) 2005-2022 Vincent A. Cicirello.
+			Copyright (C) 2005-2023 Vincent A. Cicirello.
 
 			JavaPermutationTools is free software: you can redistribute it and/or modify
 			it under the terms of the GNU General Public License as published by
@@ -259,7 +259,7 @@
 						<link>https://rho-mu.cicirello.org/api</link>
 						<link>https://core.cicirello.org/api</link>
 					</links>
-					<bottom><![CDATA[Copyright &copy; 2005-2022 <a href=\"https://www.cicirello.org/\" target=_top>Vincent A. Cicirello</a>.  All rights reserved.]]></bottom>
+					<bottom><![CDATA[Copyright &copy; 2005-2023 <a href=\"https://www.cicirello.org/\" target=_top>Vincent A. Cicirello</a>.  All rights reserved.]]></bottom>
 				</configuration>
 			</plugin>
 			<plugin>
diff --git a/src/main/java/module-info.java b/src/main/java/module-info.java
index 71dbc88a..76825ba0 100644
--- a/src/main/java/module-info.java
+++ b/src/main/java/module-info.java
@@ -1,6 +1,6 @@
 /*
  * JavaPermutationTools - A Java library for computation on permutations.
- * Copyright 2005-2022 Vincent A. Cicirello, <https://www.cicirello.org/>.
+ * Copyright 2005-2023 Vincent A. Cicirello, <https://www.cicirello.org/>.
  *
  * JavaPermutationTools is free software: you can
  * redistribute it and/or modify it under the terms of the GNU
@@ -24,7 +24,7 @@
  *
  * <h2>JavaPermutationTools - A Java library for computation on permutations</h2>
  *
- * <p>Copyright &copy; 2005-2022 <a href="https://www.cicirello.org/" target=_top>Vincent A.
+ * <p>Copyright &copy; 2005-2023 <a href="https://www.cicirello.org/" target=_top>Vincent A.
  * Cicirello</a>.
  *
  * <p><a href="https://doi.org/10.21105/joss.00950"><img