diff --git a/en16931-cii2ubl-cli/CII_example1-ubl.xml b/en16931-cii2ubl-cli/CII_example1-ubl.xml
index eb8185e..143ba9a 100644
--- a/en16931-cii2ubl-cli/CII_example1-ubl.xml
+++ b/en16931-cii2ubl-cli/CII_example1-ubl.xml
@@ -1,4 +1,23 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Copyright (C) 2019-2024 Philip Helger
+    http://www.helger.com
+    philip[at]helger[dot]com
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+            http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+-->
 <Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cec="urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
   <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0</cbc:CustomizationID>
   <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
diff --git a/en16931-cii2ubl-cli/_test.cmd b/en16931-cii2ubl-cli/_test.cmd
index 4ba2a51..ba292ea 100644
--- a/en16931-cii2ubl-cli/_test.cmd
+++ b/en16931-cii2ubl-cli/_test.cmd
@@ -1,5 +1,5 @@
 @REM
-@REM Copyright (C) 2019-2023 Philip Helger
+@REM Copyright (C) 2019-2024 Philip Helger
 @REM http://www.helger.com
 @REM philip[at]helger[dot]com
 @REM
diff --git a/en16931-cii2ubl-cli/findbugs-exclude.xml b/en16931-cii2ubl-cli/findbugs-exclude.xml
index 19d10f8..5b3d706 100644
--- a/en16931-cii2ubl-cli/findbugs-exclude.xml
+++ b/en16931-cii2ubl-cli/findbugs-exclude.xml
@@ -1,6 +1,6 @@
 <!--
 
-    Copyright (C) 2019-2023 Philip Helger
+    Copyright (C) 2019-2024 Philip Helger
     http://www.helger.com
     philip[at]helger[dot]com
 
diff --git a/en16931-cii2ubl-cli/pom.xml b/en16931-cii2ubl-cli/pom.xml
index ef83161..b6589f8 100644
--- a/en16931-cii2ubl-cli/pom.xml
+++ b/en16931-cii2ubl-cli/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (C) 2019-2023 Philip Helger
+    Copyright (C) 2019-2024 Philip Helger
     http://www.helger.com
     philip[at]helger[dot]com
 
diff --git a/en16931-cii2ubl-cli/src/etc/javadoc.css b/en16931-cii2ubl-cli/src/etc/javadoc.css
index 64e1ced..e5507bc 100644
--- a/en16931-cii2ubl-cli/src/etc/javadoc.css
+++ b/en16931-cii2ubl-cli/src/etc/javadoc.css
@@ -1,5 +1,5 @@
 /**
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl-cli/src/etc/license-template.txt b/en16931-cii2ubl-cli/src/etc/license-template.txt
index 06a4256..c13913f 100644
--- a/en16931-cii2ubl-cli/src/etc/license-template.txt
+++ b/en16931-cii2ubl-cli/src/etc/license-template.txt
@@ -1,4 +1,4 @@
-Copyright (C) 2019-2023 Philip Helger
+Copyright (C) 2019-2024 Philip Helger
 http://www.helger.com
 philip[at]helger[dot]com
 
diff --git a/en16931-cii2ubl-cli/src/main/java/com/helger/en16931/cii2ubl/cli/CIIToUBLConverter.java b/en16931-cii2ubl-cli/src/main/java/com/helger/en16931/cii2ubl/cli/CIIToUBLConverter.java
index 83ceddd..3c32730 100644
--- a/en16931-cii2ubl-cli/src/main/java/com/helger/en16931/cii2ubl/cli/CIIToUBLConverter.java
+++ b/en16931-cii2ubl-cli/src/main/java/com/helger/en16931/cii2ubl/cli/CIIToUBLConverter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl-cli/src/main/resources/simplelogger.properties b/en16931-cii2ubl-cli/src/main/resources/simplelogger.properties
index 41b74e4..34e5dc2 100644
--- a/en16931-cii2ubl-cli/src/main/resources/simplelogger.properties
+++ b/en16931-cii2ubl-cli/src/main/resources/simplelogger.properties
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2019-2023 Philip Helger
+# Copyright (C) 2019-2024 Philip Helger
 # http://www.helger.com
 # philip[at]helger[dot]com
 #
diff --git a/en16931-cii2ubl-cli/src/test/resources/CII_example1.xml b/en16931-cii2ubl-cli/src/test/resources/CII_example1.xml
index 6a531ee..9f5a4ad 100644
--- a/en16931-cii2ubl-cli/src/test/resources/CII_example1.xml
+++ b/en16931-cii2ubl-cli/src/test/resources/CII_example1.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
 
-    Copyright (C) 2019-2023 Philip Helger
+    Copyright (C) 2019-2024 Philip Helger
     http://www.helger.com
     philip[at]helger[dot]com
 
@@ -18,7 +18,6 @@
     limitations under the License.
 
 -->
-<!-- XML instance generated by Andreas Pelekies -->
 <!-- Example 1: Invoice with multiple line items for EN16931 -->
 <!-- Timestamp: 2017-08-24 00:00:00 +0200 -->
 <rsm:CrossIndustryInvoice xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
diff --git a/en16931-cii2ubl/findbugs-exclude.xml b/en16931-cii2ubl/findbugs-exclude.xml
index 19d10f8..5b3d706 100644
--- a/en16931-cii2ubl/findbugs-exclude.xml
+++ b/en16931-cii2ubl/findbugs-exclude.xml
@@ -1,6 +1,6 @@
 <!--
 
-    Copyright (C) 2019-2023 Philip Helger
+    Copyright (C) 2019-2024 Philip Helger
     http://www.helger.com
     philip[at]helger[dot]com
 
diff --git a/en16931-cii2ubl/pom.xml b/en16931-cii2ubl/pom.xml
index efe5f42..f86ea53 100644
--- a/en16931-cii2ubl/pom.xml
+++ b/en16931-cii2ubl/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (C) 2019-2023 Philip Helger
+    Copyright (C) 2019-2024 Philip Helger
     http://www.helger.com
     philip[at]helger[dot]com
 
diff --git a/en16931-cii2ubl/src/etc/javadoc.css b/en16931-cii2ubl/src/etc/javadoc.css
index 64e1ced..e5507bc 100644
--- a/en16931-cii2ubl/src/etc/javadoc.css
+++ b/en16931-cii2ubl/src/etc/javadoc.css
@@ -1,5 +1,5 @@
 /**
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl/src/etc/license-template.txt b/en16931-cii2ubl/src/etc/license-template.txt
index 06a4256..c13913f 100644
--- a/en16931-cii2ubl/src/etc/license-template.txt
+++ b/en16931-cii2ubl/src/etc/license-template.txt
@@ -1,4 +1,4 @@
-Copyright (C) 2019-2023 Philip Helger
+Copyright (C) 2019-2024 Philip Helger
 http://www.helger.com
 philip[at]helger[dot]com
 
diff --git a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/AbstractCIIToUBLConverter.java b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/AbstractCIIToUBLConverter.java
index d528c3f..588777b 100644
--- a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/AbstractCIIToUBLConverter.java
+++ b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/AbstractCIIToUBLConverter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL21Converter.java b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL21Converter.java
index a9e6dcf..e1e3350 100644
--- a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL21Converter.java
+++ b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL21Converter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL22Converter.java b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL22Converter.java
index 12f261b..367e689 100644
--- a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL22Converter.java
+++ b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL22Converter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL23Converter.java b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL23Converter.java
index 1275f20..1d606e6 100644
--- a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL23Converter.java
+++ b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL23Converter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL24Converter.java b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL24Converter.java
index ff1590d..0a4a697 100644
--- a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL24Converter.java
+++ b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL24Converter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBLVersion.java b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBLVersion.java
index 0b12ca2..780be4c 100644
--- a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBLVersion.java
+++ b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBLVersion.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/EUBLCreationMode.java b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/EUBLCreationMode.java
index e520150..04fdecb 100644
--- a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/EUBLCreationMode.java
+++ b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/EUBLCreationMode.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl/src/main/resources/cii2ubl-version.properties b/en16931-cii2ubl/src/main/resources/cii2ubl-version.properties
index 9bfe592..ff5604c 100644
--- a/en16931-cii2ubl/src/main/resources/cii2ubl-version.properties
+++ b/en16931-cii2ubl/src/main/resources/cii2ubl-version.properties
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2019-2023 Philip Helger
+# Copyright (C) 2019-2024 Philip Helger
 # http://www.helger.com
 # philip[at]helger[dot]com
 #
diff --git a/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/AbstractCIIToUBLConverterTest.java b/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/AbstractCIIToUBLConverterTest.java
index bc0a2c6..ffff5d5 100644
--- a/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/AbstractCIIToUBLConverterTest.java
+++ b/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/AbstractCIIToUBLConverterTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL21ConverterTest.java b/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL21ConverterTest.java
index 9360ae5..bb9561f 100644
--- a/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL21ConverterTest.java
+++ b/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL21ConverterTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL22ConverterTest.java b/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL22ConverterTest.java
index 80bfe3e..e4fd5ab 100644
--- a/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL22ConverterTest.java
+++ b/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL22ConverterTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL23ConverterTest.java b/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL23ConverterTest.java
index 37288b1..5a5c43b 100644
--- a/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL23ConverterTest.java
+++ b/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL23ConverterTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL24ConverterTest.java b/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL24ConverterTest.java
index 64ddbc5..063cfef 100644
--- a/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL24ConverterTest.java
+++ b/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBL24ConverterTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBLVersionTest.java b/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBLVersionTest.java
index 24137ab..4eb4175 100644
--- a/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBLVersionTest.java
+++ b/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/CIIToUBLVersionTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/MockSettings.java b/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/MockSettings.java
index 1f8091a..9d88540 100644
--- a/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/MockSettings.java
+++ b/en16931-cii2ubl/src/test/java/com/helger/en16931/cii2ubl/MockSettings.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/pom.xml b/pom.xml
index 0434771..22b4d64 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (C) 2019-2023 Philip Helger
+    Copyright (C) 2019-2024 Philip Helger
     http://www.helger.com
     philip[at]helger[dot]com
 
diff --git a/src/etc/javadoc.css b/src/etc/javadoc.css
index 64e1ced..e5507bc 100644
--- a/src/etc/javadoc.css
+++ b/src/etc/javadoc.css
@@ -1,5 +1,5 @@
 /**
- * Copyright (C) 2019-2023 Philip Helger
+ * Copyright (C) 2019-2024 Philip Helger
  * http://www.helger.com
  * philip[at]helger[dot]com
  *
diff --git a/src/etc/license-template.txt b/src/etc/license-template.txt
index 06a4256..c13913f 100644
--- a/src/etc/license-template.txt
+++ b/src/etc/license-template.txt
@@ -1,4 +1,4 @@
-Copyright (C) 2019-2023 Philip Helger
+Copyright (C) 2019-2024 Philip Helger
 http://www.helger.com
 philip[at]helger[dot]com