diff --git a/app.json b/app.json
index 5eabe48e..e518acd4 100644
--- a/app.json
+++ b/app.json
@@ -123,7 +123,7 @@
       "formation": {
         "web": {
           "quantity": 1,
-          "size": "free"
+          "size": "eco"
         }
       }
     }