diff --git a/app.json b/app.json
index 68785e7fc..473b1c1b2 100644
--- a/app.json
+++ b/app.json
@@ -94,7 +94,7 @@
     {
       "plan": "heroku-postgresql",
       "options": {
-        "version": "11"
+        "version": "15" 
       }
     }
   ],