diff --git a/3rdparty b/3rdparty
index 1800e7d4b9a2c..ff61822150ccd 160000
--- a/3rdparty
+++ b/3rdparty
@@ -1 +1 @@
-Subproject commit 1800e7d4b9a2c9dadc885dddc71ce9bbea013393
+Subproject commit ff61822150ccd189a407b1d76309ac900baffa7b
diff --git a/apps/dav/lib/Connector/Sabre/Directory.php b/apps/dav/lib/Connector/Sabre/Directory.php
index 7ceecf731e453..1519dd603a5e7 100644
--- a/apps/dav/lib/Connector/Sabre/Directory.php
+++ b/apps/dav/lib/Connector/Sabre/Directory.php
@@ -463,8 +463,7 @@ public function moveInto($targetName, $fullSourcePath, INode $sourceNode) {
 		return true;
 	}
 
-
-	public function copyInto($targetName, $sourcePath, INode $sourceNode) {
+	public function copyInto($targetName, $sourcePath, INode $sourceNode, int $depth): bool {
 		if ($sourceNode instanceof File || $sourceNode instanceof Directory) {
 			try {
 				$destinationPath = $this->getPath() . '/' . $targetName;
diff --git a/apps/dav/lib/Connector/Sabre/ObjectTree.php b/apps/dav/lib/Connector/Sabre/ObjectTree.php
index bfbdfb33db047..b8fb7a13c80cb 100644
--- a/apps/dav/lib/Connector/Sabre/ObjectTree.php
+++ b/apps/dav/lib/Connector/Sabre/ObjectTree.php
@@ -151,7 +151,7 @@ public function getNodeForPath($path) {
 	 * @throws \Sabre\DAV\Exception\ServiceUnavailable
 	 * @return void
 	 */
-	public function copy($sourcePath, $destinationPath) {
+	public function copy($sourcePath, $destinationPath, int $depth): void {
 		if (!$this->fileView) {
 			throw new \Sabre\DAV\Exception\ServiceUnavailable('filesystem not setup');
 		}