diff --git a/manifest.json b/manifest.json
index 4ce0b9b..d9a04a2 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,6 +1,7 @@
 {
   "name": "Tiny Tiny RSS",
   "id": "ttrss",
+  "packaging_format": 1,
   "description": {
     "en": "A PHP and Ajax feed reader",
     "fr": "Un lecteur de flux en PHP et Ajax"