diff --git a/lib/Controller/AttachmentController.php b/lib/Controller/AttachmentController.php
index df028e93ecd..c495c1aac02 100644
--- a/lib/Controller/AttachmentController.php
+++ b/lib/Controller/AttachmentController.php
@@ -51,6 +51,8 @@ class AttachmentController extends Controller {
 		'image/bmp',
 		'image/svg+xml',
 		'image/webp',
+		'image/heic',
+		'image/heif',
 	];
 
 	private AttachmentService $attachmentService;