diff --git a/CONTRIBUTORS b/CONTRIBUTORS
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -1,7 +1,8 @@
 List of contributors to Kallithea project:
 
+    Mads Kiilerich <mads@kiilerich.com> 2016-2022
+    Manuel Jacob <me@manueljacob.de> 2019-2020 2022
     Thomas De Schampheleire <thomas.de_schampheleire@nokia.com> 2014-2021
-    Mads Kiilerich <mads@kiilerich.com> 2016-2021
     ssantos <ssantos@web.de> 2018-2021
     Private <adamantine.sword@gmail.com> 2019-2021
     Étienne Gilli <etienne@gilli.io> 2020-2021
@@ -14,7 +15,6 @@ List of contributors to Kallithea projec
     Asterios Dimitriou <steve@pci.gr> 2016-2017 2020
     Allan Nordhøy <epost@anotheragency.no> 2017-2020
     Anton Schur <tonich.sh@gmail.com> 2017 2020
-    Manuel Jacob <me@manueljacob.de> 2019-2020
     Artem <kovalevartem.ru@gmail.com> 2020
     David Ignjić <ignjic@gmail.com> 2020
     Dennis Fink <dennis.fink@c3l.lu> 2020
diff --git a/kallithea/templates/about.html b/kallithea/templates/about.html
--- a/kallithea/templates/about.html
+++ b/kallithea/templates/about.html
@@ -24,7 +24,8 @@
   necessarily limited to the following:</p>
   <ul>
 
-  <li>Copyright &copy; 2012&ndash;2021, Mads Kiilerich</li>
+  <li>Copyright &copy; 2012&ndash;2022, Mads Kiilerich</li>
+  <li>Copyright &copy; 2019&ndash;2020, 2022, Manuel Jacob</li>
   <li>Copyright &copy; 2014&ndash;2021, Thomas De Schampheleire</li>
   <li>Copyright &copy; 2015&ndash;2017, 2019&ndash;2021, Étienne Gilli</li>
   <li>Copyright &copy; 2018&ndash;2021, ssantos</li>
@@ -38,7 +39,6 @@
   <li>Copyright &copy; 2016&ndash;2017, 2020, Asterios Dimitriou</li>
   <li>Copyright &copy; 2017&ndash;2020, Allan Nordhøy</li>
   <li>Copyright &copy; 2017, 2020, Anton Schur</li>
-  <li>Copyright &copy; 2019&ndash;2020, Manuel Jacob</li>
   <li>Copyright &copy; 2020, Artem</li>
   <li>Copyright &copy; 2020, David Ignjić</li>
   <li>Copyright &copy; 2020, Dennis Fink</li>