diff --git a/appinfo/update.php b/appinfo/update.php
index dfc50904..b89894d2 100644
--- a/appinfo/update.php
+++ b/appinfo/update.php
@@ -11,6 +11,9 @@
 
 $installedVersion = \OCP\Config::getAppValue('documents', 'installed_version');
 
+$cleanup = \OC_DB::prepare('DELETE FROM `*PREFIX*documents_member` WHERE `member_id` NOT IN(SELECT `member_id` from `*PREFIX*documents_member` WHERE `last_activity`>0)');
+$cleanup->execute();
+
 if (version_compare($installedVersion, '0.7', '<=')) {
 	\OCP\Config::setAppValue('documents', 'unstable', 'false');
 	$session = new \OCA\Documents\Db_Session();