diff --git a/backend/app.js b/backend/app.js
index 67f142f82f053a2d7493e8ddf2a98b565761305d..6f4b0f2031b1762b42696c243dfa4cbc30f85708 100644
--- a/backend/app.js
+++ b/backend/app.js
@@ -23,7 +23,7 @@ db.once("open", function() {
 });
 
 
-toucans.updateMany({}, {"toucan_id": 0});
+await toucans.updateMany({}, [ {$set : { 'toucan_id': "0"} } ]);
 
 app.use(cors());
 app.use(bodyParser.json());