diff --git a/app.json b/app.json
index 7ba8ca1..f4bf6c7 100644
--- a/app.json
+++ b/app.json
@@ -1,4 +1,5 @@
 {
     "name": "Git2Gus",
-    "description": "A GitHub application to keep issues in sync with Salesforce's Agile Accelerator."
+    "description": "A GitHub application to keep issues in sync with Salesforce's Agile Accelerator.",
+    "stack": "heroku-20"
 }