diff --git a/apps/files_sharing/appinfo/info.xml b/apps/files_sharing/appinfo/info.xml
index f954eb93f0..32cdbd552e 100644
--- a/apps/files_sharing/appinfo/info.xml
+++ b/apps/files_sharing/appinfo/info.xml
@@ -9,7 +9,7 @@
 Turning the feature off removes shared files and folders on the server for all share recipients, and also on the sync clients and mobile apps. More information is available in the Nextcloud Documentation.
 
 	</description>
-	<version>1.13.0</version>
+	<version>1.13.1</version>
 	<licence>agpl</licence>
 	<author>Michael Gapczynski</author>
 	<author>Bjoern Schiessle</author>
diff --git a/apps/files_sharing/composer/composer/autoload_classmap.php b/apps/files_sharing/composer/composer/autoload_classmap.php
index 887e77ef47..2370725f35 100644
--- a/apps/files_sharing/composer/composer/autoload_classmap.php
+++ b/apps/files_sharing/composer/composer/autoload_classmap.php
@@ -64,6 +64,7 @@ return array(
     'OCA\\Files_Sharing\\Migration\\SetAcceptedStatus' => $baseDir . '/../lib/Migration/SetAcceptedStatus.php',
     'OCA\\Files_Sharing\\Migration\\SetPasswordColumn' => $baseDir . '/../lib/Migration/SetPasswordColumn.php',
     'OCA\\Files_Sharing\\Migration\\Version11300Date20201120141438' => $baseDir . '/../lib/Migration/Version11300Date20201120141438.php',
+    'OCA\\Files_Sharing\\Migration\\Version21000Date20201223143245' => $baseDir . '/../lib/Migration/Version21000Date20201223143245.php',
     'OCA\\Files_Sharing\\MountProvider' => $baseDir . '/../lib/MountProvider.php',
     'OCA\\Files_Sharing\\Notification\\Listener' => $baseDir . '/../lib/Notification/Listener.php',
     'OCA\\Files_Sharing\\Notification\\Notifier' => $baseDir . '/../lib/Notification/Notifier.php',
diff --git a/apps/files_sharing/composer/composer/autoload_static.php b/apps/files_sharing/composer/composer/autoload_static.php
index a3499b4125..e5c0c1ec25 100644
--- a/apps/files_sharing/composer/composer/autoload_static.php
+++ b/apps/files_sharing/composer/composer/autoload_static.php
@@ -79,6 +79,7 @@ class ComposerStaticInitFiles_Sharing
         'OCA\\Files_Sharing\\Migration\\SetAcceptedStatus' => __DIR__ . '/..' . '/../lib/Migration/SetAcceptedStatus.php',
         'OCA\\Files_Sharing\\Migration\\SetPasswordColumn' => __DIR__ . '/..' . '/../lib/Migration/SetPasswordColumn.php',
         'OCA\\Files_Sharing\\Migration\\Version11300Date20201120141438' => __DIR__ . '/..' . '/../lib/Migration/Version11300Date20201120141438.php',
+        'OCA\\Files_Sharing\\Migration\\Version21000Date20201223143245' => __DIR__ . '/..' . '/../lib/Migration/Version21000Date20201223143245.php',
         'OCA\\Files_Sharing\\MountProvider' => __DIR__ . '/..' . '/../lib/MountProvider.php',
         'OCA\\Files_Sharing\\Notification\\Listener' => __DIR__ . '/..' . '/../lib/Notification/Listener.php',
         'OCA\\Files_Sharing\\Notification\\Notifier' => __DIR__ . '/..' . '/../lib/Notification/Notifier.php',
diff --git a/apps/files_sharing/lib/Migration/Version11300Date20201120141438.php b/apps/files_sharing/lib/Migration/Version11300Date20201120141438.php
index 687e212e9f..8094feaef5 100644
--- a/apps/files_sharing/lib/Migration/Version11300Date20201120141438.php
+++ b/apps/files_sharing/lib/Migration/Version11300Date20201120141438.php
@@ -116,6 +116,21 @@ class Version11300Date20201120141438 extends SimpleMigrationStep {
 				$remoteIdColumn->setOptions(['length' => 255]);
 				$remoteIdColumn->setDefault('');
 			}
+			if (!$table->hasColumn('parent')) {
+				$table->addColumn('parent', Types::BIGINT, [
+					'notnull' => false,
+					'default' => -1,
+				]);
+			}
+			if (!$table->hasColumn('share_type')) {
+				$table->addColumn('share_type', Types::INTEGER, [
+					'notnull' => false,
+					'length' => 4,
+				]);
+			}
+			if ($table->hasColumn('lastscan')) {
+				$table->dropColumn('lastscan');
+			}
 		}
 
 		return $schema;
diff --git a/apps/files_sharing/lib/Migration/Version21000Date20201223143245.php b/apps/files_sharing/lib/Migration/Version21000Date20201223143245.php
new file mode 100644
index 0000000000..5dfdb09f1e
--- /dev/null
+++ b/apps/files_sharing/lib/Migration/Version21000Date20201223143245.php
@@ -0,0 +1,70 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2020 Vincent Petry <vincent@nextcloud.com>
+ *
+ * @author Vincent Petry <vincent@nextcloud.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+namespace OCA\Files_Sharing\Migration;
+
+use Closure;
+use Doctrine\DBAL\Types\Types;
+use OCP\DB\ISchemaWrapper;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+
+class Version21000Date20201223143245 extends SimpleMigrationStep {
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		if ($schema->hasTable('share_external')) {
+			$table = $schema->getTable('share_external');
+			$changed = false;
+			if (!$table->hasColumn('parent')) {
+				$table->addColumn('parent', Types::BIGINT, [
+					'notnull' => false,
+					'default' => -1,
+				]);
+				$changed = true;
+			}
+			if (!$table->hasColumn('share_type')) {
+				$table->addColumn('share_type', Types::INTEGER, [
+					'notnull' => false,
+					'length' => 4,
+				]);
+				$changed = true;
+			}
+			if ($table->hasColumn('lastscan')) {
+				$table->dropColumn('lastscan');
+				$changed = true;
+			}
+
+			if ($changed) {
+				return $schema;
+			}
+		}
+
+		return null;
+	}
+}