diff --git a/app.json b/app.json
index 62040f1d84..57f8ab0aba 100644
--- a/app.json
+++ b/app.json
@@ -41,5 +41,8 @@
     {
       "plan": "heroku-postgresql"
     }
-  ]
+  ],
+  "scripts": {
+    "postdeploy": "export APP_KEY=$(php artisan --no-ansi key:generate --show)"
+  }
 }
\ No newline at end of file