diff --git a/group_vars/gxconfig.yml b/group_vars/gxconfig.yml
index e439f92c8..998c99fcc 100644
--- a/group_vars/gxconfig.yml
+++ b/group_vars/gxconfig.yml
@@ -1699,7 +1699,7 @@ base_app_main: &BASE_APP_MAIN
   # Admin section of the server, and will have access to create users,
   # groups, roles, libraries, and more.  For more information, see:
   # https://galaxyproject.org/admin/
-  admin_users: "hxr@informatik.uni-freiburg.de,bjoern.gruening@gmail.com,kuntzm@informatik.uni-freiburg.de,maierw@informatik.uni-freiburg.de,berenice.batut@gmail.com,srikakus@informatik.uni-freiburg.de,dominguj@informatik.uni-freiburg.de"
+  admin_users: "hxr@informatik.uni-freiburg.de,bjoern.gruening@gmail.com,kuntzm@informatik.uni-freiburg.de,maierw@informatik.uni-freiburg.de,berenice.batut@gmail.com,srikakus@informatik.uni-freiburg.de,zierep@informatik.uni-freiburg.de"
 
   # Force everyone to log in (disable anonymous access).
   #require_login: false