diff --git a/packages/backend/src/server/web/ClientServerService.ts b/packages/backend/src/server/web/ClientServerService.ts
index 8ca61a497d..af02363ab9 100644
--- a/packages/backend/src/server/web/ClientServerService.ts
+++ b/packages/backend/src/server/web/ClientServerService.ts
@@ -186,6 +186,12 @@ export class ClientServerService {
 					'title': 'title',
 					'text': 'text',
 					'url': 'url',
+					'files': [
+						{
+							'name': 'file',
+							'accept': '*/*'
+						},
+					],
 				},
 			},
 		};
diff --git a/packages/backend/src/server/web/manifest.json b/packages/backend/src/server/web/manifest.json
index 41171d62a1..437d349ac5 100644
--- a/packages/backend/src/server/web/manifest.json
+++ b/packages/backend/src/server/web/manifest.json
@@ -32,7 +32,13 @@
 		"params": {
 			"title": "title",
 			"text": "text",
-			"url": "url"
+			"url": "url",
+			"files": [
+				{
+					"name": "file",
+					"accept": "*/*"
+				}
+			]
 		}
 	}
 }