diff --git a/lib/private/Files/ObjectStore/S3ConnectionTrait.php b/lib/private/Files/ObjectStore/S3ConnectionTrait.php
index 0e887812f85f9..a5f58ce05c118 100644
--- a/lib/private/Files/ObjectStore/S3ConnectionTrait.php
+++ b/lib/private/Files/ObjectStore/S3ConnectionTrait.php
@@ -156,6 +156,7 @@ public function getConnection() {
 				'connect_timeout' => 5
 			],
 			'use_aws_shared_config_files' => false,
+			'suppress_php_deprecation_warning' => true,
 		];
 
 		if ($this->params['s3-accelerate']) {