diff --git a/app.json b/app.json
index cca08fec2..15216f054 100644
--- a/app.json
+++ b/app.json
@@ -32,12 +32,10 @@
   },
   "formation": {
     "web": {
-      "quantity": 1,
-      "size": "FREE"
+      "quantity": 1
     },
     "worker": {
-      "quantity": 1,
-      "size": "FREE"
+      "quantity": 1
     }
   },
   "image": "heroku/ruby",