diff --git a/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_32.rst b/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_32.rst
index 7d4244d47..cd285d5d4 100644
--- a/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_32.rst
+++ b/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_32.rst
@@ -50,6 +50,7 @@ Deprecated APIs
 
 - ``--color-error-rgb``, ``--color-info-rgb``, ``--color-success-rgb``, ``--color-warning-rgb`` are deprecated.
   Instead use the native CSS color utils with the the existing variables like ``--color-error`` and similar.
+- The ``OC.SystemTags`` api is deprecated. If you need to get the list of system tags, check `this merge request <https://github.com/nextcloud/files_retention/pull/855>`_ for how to fetch the tags directly.
 
 Back-end changes
 ----------------
diff --git a/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_33.rst b/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_33.rst
index e050fb970..fcef92d5a 100644
--- a/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_33.rst
+++ b/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_33.rst
@@ -25,6 +25,7 @@ Removed APIs
 
 - The global ``md5`` implementation is removed. It was deprecated since Nextcloud 20 and not used by Nextcloud anymore.
   If you still need a ``md5`` implementation you can just use some external package like `crypto-browserify <https://www.npmjs.com/package/crypto-browserify>`_.
+- The ``OC.SystemTags`` api was removed. If you need to get the list of system tags, check `this merge request <https://github.com/nextcloud/files_retention/pull/855>`_ for how to fetch the tags directly.
 
 Back-end changes
 ----------------