diff --git a/developer_manual/release_notes/critical_changes.rst b/developer_manual/release_notes/critical_changes.rst
index 3a1492adda9..ccd55f5307b 100644
--- a/developer_manual/release_notes/critical_changes.rst
+++ b/developer_manual/release_notes/critical_changes.rst
@@ -64,6 +64,11 @@ Removed back-end APIs
   - ``\OCP\AppFramework\Http\StrictContentSecurityPolicy``
   - ``\OCP\AppFramework\Http\StrictEvalContentSecurityPolicy``
   - ``\OCP\AppFramework\Http\StrictInlineContentSecurityPolicy``
+- Various methods from the legacy ``OC_Util`` static class were removed.
+  - Instead of ``\OC_Util::encodePath`` use ``\OCP\Util::encodePath``.
+  - Instead of ``\OC_Util::sanitizeHTML`` use ``\OCP\Util::sanitizeHTML``
+  - Instead of ``\OC_Util::redirectToDefaultPage`` and  ``\OC_Util::getDefaultPageUrl`` use ``\OCP\IUrlGenerator::linkToDefaultPageUrl``
+  - Instead of ``\OC_Util::checkAdminUser`` use ``IGroupManager::class::isAdmin``
 
 
 Unified sharing
diff --git a/developer_manual/release_notes/deprecations.rst b/developer_manual/release_notes/deprecations.rst
index 27420ed9002..75965bfb926 100644
--- a/developer_manual/release_notes/deprecations.rst
+++ b/developer_manual/release_notes/deprecations.rst
@@ -20,6 +20,12 @@ New deprecations
 
 .. todo:: This page needs a section for every new deprecation.
 
+- ``\OCP\Util::setChannel`` is now deprecated and you need to use ``\OCP\ServerVersion::setChannel`` instead.
+- ``\OCP\Util::linkToAbsolute`` is now deprecated and you need to use ``\OCP\IUrlGenerator::getAbsoluteUrl`` and ``\OCP\IUrlGenerator::linkTo`` instead.
+- ``\OCP\Util::linkToRemove`` is now deprecated and you need to use ``\OCP\IUrlGenerator::linkToRemote`` instead.
+- ``\OCP\Util::isPublicLinkPasswordRequired`` is now deprecated and you need to use ``\OCP\Share\IManager::shareApiLinkEnforcePassword`` instead.
+- ``\OCP\Util::isDefaultExpireDateEnforced`` is now deprecated and you need to use ``\OCP\Share\IManager::shareApiLinkDefaultExpireDateEnforced`` instead.
+
 Older deprecations
 ------------------