diff --git a/spec.yml b/spec.yml
index 6f90780..b494071 100644
--- a/spec.yml
+++ b/spec.yml
@@ -15,3 +15,9 @@ services:
     instance_size_slug: basic-xxs
     routes:
       - path: /
+databases:
+  - engine: PG
+    name: newsletter
+    num_nodes: 1
+    size: db-s-dev-database
+    version: "12"