diff --git a/contributors.txt b/contributors.txt
index 62f5e7dd..1e871d76 100644
--- a/contributors.txt
+++ b/contributors.txt
@@ -59,3 +59,4 @@ YYYY/MM/DD, github id, Full name, email
 2012/11/22, sharwell, Sam Harwell, sam@tunnelvisionlabs.com
 2012/09/24, mike-lischke, Mike Lischke, mike@lischke-online.de
 2022/04/04, jcking, Justin King, jcking@google.com
+2023/01/19, tobi5775, Tobias Wittmann, tobias.wittmann96@web.de
diff --git a/pom.xml b/pom.xml
index 9ef7fcb0..d56656b8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,4 +1,34 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!--
+    [The "BSD licence"]
+
+     ANTLR        - Copyright (c) 2005-2008 Terence Parr
+     Maven Plugin - Copyright (c) 2009      Jim Idle
+
+     All rights reserved.
+
+     Redistribution and use in source and binary forms, with or without
+     modification, are permitted provided that the following conditions
+     are met:
+     1. Redistributions of source code must retain the above copyright
+        notice, this list of conditions and the following disclaimer.
+     2. Redistributions in binary form must reproduce the above copyright
+        notice, this list of conditions and the following disclaimer in the
+        documentation and/or other materials provided with the distribution.
+     3. The name of the author may not be used to endorse or promote products
+        derived from this software without specific prior written permission.
+
+     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+     OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+     IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+     DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+     THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+     THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+-->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 
     <parent>