diff --git a/apps/dav/appinfo/v1/caldav.php b/apps/dav/appinfo/v1/caldav.php
index 13b4d3119ca91..6c1134d1560a9 100644
--- a/apps/dav/appinfo/v1/caldav.php
+++ b/apps/dav/appinfo/v1/caldav.php
@@ -78,6 +78,8 @@
 }
 
 $server->addPlugin(new \Sabre\CalDAV\ICSExportPlugin());
+$server->addPlugin(new \Sabre\CalDAV\Schedule\Plugin());
+$server->addPlugin(new OCA\DAV\CalDAV\Schedule\IMipPlugin( \OC::$server->getMailer(), \OC::$server->getLogger()));
 $server->addPlugin(new ExceptionLoggerPlugin('caldav', \OC::$server->getLogger()));
 
 // And off we go!