diff --git a/CHANGES.md b/CHANGES.md
index e06b3f2032e..0532eb1270a 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -4,6 +4,10 @@ moodle-theme_boost_union
 Changes
 -------
 
+### Unreleased
+
+* 2024-11-11 - Release: Add ssystems GmbH to the list of maintainers in README.md.
+
 ### v4.5-r2
 
 * 2024-10-31 - Bugfix: Fix possible site failure when a cohort or role used as restriction of a smart menu item is deleted, resolves #737.
diff --git a/README.md b/README.md
index 70cf6fbff7f..a8f7541fc48 100644
--- a/README.md
+++ b/README.md
@@ -798,11 +798,14 @@ The plugin is maintained by\
 Moodle an Hochschulen e.V.
 
 in cooperation with\
-lern.link GmbH
+ssystems GmbH
 
 together with\
 bdecent GmbH
 
+and\
+lern.link GmbH
+
 
 Copyright
 ---------
@@ -849,6 +852,7 @@ Moodle an Hochschulen e.V. would like to thank these main contributors (in alpha
 * RWTH Aachen, Amrita Deb Dutta: Code
 * RWTH Aachen, Josha Bartsch: Code
 * Solent University, Mark Sharp: Code
+* ssystems GmbH, Alexander Bias: Code, Peer Review, Ideating, Funding
 * Technische Universität Berlin, Lars Bonczek: Code
 * University of Graz, André Menrath: Code
 * University of Lübeck, Christian Wolters: Code, Peer Review, Ideating
diff --git a/lang/en/theme_boost_union.php b/lang/en/theme_boost_union.php
index 6b54d3719fd..c748fd2b20b 100644
--- a/lang/en/theme_boost_union.php
+++ b/lang/en/theme_boost_union.php
@@ -30,7 +30,7 @@
 
 // General.
 $string['pluginname'] = 'Boost Union';
-$string['choosereadme'] = '<p>Theme Boost Union is an enhanced child theme of Boost which is intended, on the one hand, to make Boost simply more configurable and, on the other hand, to provide helpful additional features for the daily Moodle operation of admins, teachers and students.</p><p>Boost Union is maintained by<br />Moodle an Hochschulen e.V.,</p><p>in cooperation with<br />lern.link GmbH</p><p>together with<br />bdecent GmbH</p>';
+$string['choosereadme'] = 'Theme Boost Union is an enhanced child theme of Boost which is intended, on the one hand, to make Boost simply more configurable and, on the other hand, to provide helpful additional features for the daily Moodle operation of admins, teachers and students. Boost Union is maintained by Moodle an Hochschulen e.V., in cooperation with ssystems GmbH, together with bdecent GmbH and lern.link GmbH';
 $string['configtitle'] = 'Boost Union';
 $string['githubissueslink'] = '<a href="https://github.com/moodle-an-hochschulen/moodle-theme_boost_union/issues">Github issues</a>';