diff --git a/app.json b/app.json
index fb715d0..a453ad7 100644
--- a/app.json
+++ b/app.json
@@ -69,7 +69,7 @@
         {
           "plan": "heroku-postgresql",
           "options": {
-            "version": "12
+            "version": "12"
           }
         }
     ],