diff --git a/app.json b/app.json
index 08940e7c..bd902319 100644
--- a/app.json
+++ b/app.json
@@ -105,7 +105,7 @@
   "formation": {
       "web": {
           "quantity": 1,
-          "size": "free"
+          "size": "eco"
       }
   }
 }