diff --git a/apps/dav/lib/AppInfo/Application.php b/apps/dav/lib/AppInfo/Application.php
index 8bedb28714..a5444bb20d 100644
--- a/apps/dav/lib/AppInfo/Application.php
+++ b/apps/dav/lib/AppInfo/Application.php
@@ -118,8 +118,12 @@ class Application extends App implements IBootstrap {
 		$context->registerEventListener(CalendarDeletedEvent::class, ActivityUpdaterListener::class);
 		$context->registerEventListener(CalendarDeletedEvent::class, CalendarObjectReminderUpdaterListener::class);
 		$context->registerEventListener(CalendarDeletedEvent::class, CalendarDeletionDefaultUpdaterListener::class);
+
 		$context->registerEventListener(CalendarObjectCreatedEvent::class, CalendarContactInteractionListener::class);
+
+		$context->registerEventListener(CalendarObjectUpdatedEvent::class, ActivityUpdaterListener::class);
 		$context->registerEventListener(CalendarObjectUpdatedEvent::class, CalendarContactInteractionListener::class);
+		$context->registerEventListener(CalendarObjectUpdatedEvent::class, CalendarObjectReminderUpdaterListener::class);
 		$context->registerEventListener(CalendarObjectDeletedEvent::class, ActivityUpdaterListener::class);
 		$context->registerEventListener(CalendarObjectDeletedEvent::class, CalendarObjectReminderUpdaterListener::class);
 		$context->registerEventListener(CalendarShareUpdatedEvent::class, CalendarContactInteractionListener::class);
@@ -237,12 +241,8 @@ class Application extends App implements IBootstrap {
 			/** @var Backend $backend */
 			$backend = $container->query(Backend::class);
 
-			$subject = Event::SUBJECT_OBJECT_ADD;
-			if ($eventName === '\OCA\DAV\CalDAV\CalDavBackend::updateCalendarObject') {
-				$subject = Event::SUBJECT_OBJECT_UPDATE;
-			}
 			$backend->onTouchCalendarObject(
-				$subject,
+				Event::SUBJECT_OBJECT_ADD,
 				$event->getArgument('calendarData'),
 				$event->getArgument('shares'),
 				$event->getArgument('objectData')
@@ -257,7 +257,6 @@ class Application extends App implements IBootstrap {
 			);
 		};
 		$dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::createCalendarObject', $listener);
-		$dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::updateCalendarObject', $listener);
 
 		$dispatcher->addListener('OCP\Federation\TrustedServerEvent::remove',
 			function (GenericEvent $event) {
@@ -380,4 +379,4 @@ class Application extends App implements IBootstrap {
 			$logger->logException($ex);
 		}
 	}
-}
+}
\ No newline at end of file
diff --git a/apps/dav/lib/CalDAV/CalDavBackend.php b/apps/dav/lib/CalDAV/CalDavBackend.php
index b4782ca684..058d4422d6 100644
--- a/apps/dav/lib/CalDAV/CalDavBackend.php
+++ b/apps/dav/lib/CalDAV/CalDavBackend.php
@@ -1215,15 +1215,6 @@ class CalDavBackend extends AbstractBackend implements SyncSupport, Subscription
 				$shares = $this->getShares($calendarId);
 
 				$this->dispatcher->dispatchTyped(new CalendarObjectUpdatedEvent((int)$calendarId, $calendarRow, $shares, $objectRow));
-				$this->legacyDispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::updateCalendarObject', new GenericEvent(
-					'\OCA\DAV\CalDAV\CalDavBackend::updateCalendarObject',
-					[
-						'calendarId' => $calendarId,
-						'calendarData' => $calendarRow,
-						'shares' => $shares,
-						'objectData' => $objectRow,
-					]
-				));
 			} else {
 				$subscriptionRow = $this->getSubscriptionById($calendarId);
 
diff --git a/apps/dav/lib/Listener/ActivityUpdaterListener.php b/apps/dav/lib/Listener/ActivityUpdaterListener.php
index 9734a4fead..962fa239af 100644
--- a/apps/dav/lib/Listener/ActivityUpdaterListener.php
+++ b/apps/dav/lib/Listener/ActivityUpdaterListener.php
@@ -28,6 +28,7 @@ namespace OCA\DAV\Listener;
 use OCA\DAV\CalDAV\Activity\Backend as ActivityBackend;
 use OCA\DAV\Events\CalendarDeletedEvent;
 use OCA\DAV\Events\CalendarObjectDeletedEvent;
+use OCA\DAV\Events\CalendarObjectUpdatedEvent;
 use OCP\EventDispatcher\Event;
 use OCP\EventDispatcher\IEventListener;
 use Psr\Log\LoggerInterface;
@@ -65,6 +66,24 @@ class ActivityUpdaterListener implements IEventListener {
 					'exception' => $e,
 				]);
 			}
+		} elseif ($event instanceof CalendarObjectUpdatedEvent) {
+			try {
+				$this->activityBackend->onTouchCalendarObject(
+					\OCA\DAV\CalDAV\Activity\Provider\Event::SUBJECT_OBJECT_UPDATE,
+					$event->getCalendarData(),
+					$event->getShares(),
+					$event->getObjectData()
+				);
+
+				$this->logger->debug(
+					sprintf('Activity generated for deleted calendar object %d', $event->getCalendarId())
+				);
+			} catch (Throwable $e) {
+				// Any error with activities shouldn't abort the calendar deletion, so we just log it
+				$this->logger->error('Error generating activity for a deleted calendar object: ' . $e->getMessage(), [
+					'exception' => $e,
+				]);
+			}
 		} elseif ($event instanceof CalendarObjectDeletedEvent) {
 			try {
 				$this->activityBackend->onTouchCalendarObject(
diff --git a/apps/dav/lib/Listener/CalendarObjectReminderUpdaterListener.php b/apps/dav/lib/Listener/CalendarObjectReminderUpdaterListener.php
index 63fe786cfa..8261b68af4 100644
--- a/apps/dav/lib/Listener/CalendarObjectReminderUpdaterListener.php
+++ b/apps/dav/lib/Listener/CalendarObjectReminderUpdaterListener.php
@@ -29,6 +29,7 @@ use OCA\DAV\CalDAV\Reminder\Backend as ReminderBackend;
 use OCA\DAV\CalDAV\Reminder\ReminderService;
 use OCA\DAV\Events\CalendarDeletedEvent;
 use OCA\DAV\Events\CalendarObjectDeletedEvent;
+use OCA\DAV\Events\CalendarObjectUpdatedEvent;
 use OCP\EventDispatcher\Event;
 use OCP\EventDispatcher\IEventListener;
 use Psr\Log\LoggerInterface;
@@ -70,6 +71,22 @@ class CalendarObjectReminderUpdaterListener implements IEventListener {
 					'exception' => $e,
 				]);
 			}
+		} elseif ($event instanceof CalendarObjectUpdatedEvent) {
+			try {
+				$this->reminderService->onTouchCalendarObject(
+					'\OCA\DAV\CalDAV\CalDavBackend::updateCalendarObject',
+					$event->getObjectData()
+				);
+
+				$this->logger->debug(
+					sprintf('Reminders of calendar object of calendar %d cleaned up', $event->getCalendarId())
+				);
+			} catch (Throwable $e) {
+				// Any error with activities shouldn't abort the calendar object deletion, so we just log it
+				$this->logger->error('Error cleaning up reminders of a calendar object: ' . $e->getMessage(), [
+					'exception' => $e,
+				]);
+			}
 		} elseif ($event instanceof CalendarObjectDeletedEvent) {
 			try {
 				$this->reminderService->onTouchCalendarObject(
diff --git a/apps/dav/tests/unit/CalDAV/CalDavBackendTest.php b/apps/dav/tests/unit/CalDAV/CalDavBackendTest.php
index 98e1b728f9..96ae4312fd 100644
--- a/apps/dav/tests/unit/CalDAV/CalDavBackendTest.php
+++ b/apps/dav/tests/unit/CalDAV/CalDavBackendTest.php
@@ -37,6 +37,7 @@ use DateTimeZone;
 use OCA\DAV\CalDAV\CalDavBackend;
 use OCA\DAV\CalDAV\Calendar;
 use OCA\DAV\Events\CalendarDeletedEvent;
+use OCA\DAV\Events\CalendarUpdatedEvent;
 use OCP\IConfig;
 use OCP\IL10N;
 use Sabre\DAV\Exception\NotFound;
@@ -270,9 +271,11 @@ DTEND;VALUE=DATE-TIME:20130912T140000Z
 END:VEVENT
 END:VCALENDAR
 EOD;
-		$this->legacyDispatcher->expects($this->at(0))
-			->method('dispatch')
-			->with('\OCA\DAV\CalDAV\CalDavBackend::updateCalendarObject');
+		$this->dispatcher->expects(self::once())
+			->method('dispatchTyped')
+			->with(self::callback(function ($event) {
+				return $event instanceof CalendarUpdatedEvent;
+			}));
 		$this->backend->updateCalendarObject($calendarId, $uri, $calData);
 		$calendarObject = $this->backend->getCalendarObject($calendarId, $uri);
 		$this->assertEquals($calData, $calendarObject['calendardata']);