diff --git a/roles/example/tasks/main.yml b/roles/example/tasks/main.yml
index 5eb641a..4ce83ac 100644
--- a/roles/example/tasks/main.yml
+++ b/roles/example/tasks/main.yml
@@ -18,6 +18,8 @@
         readonly: true
     service_container_http_port: 8080
     service_domains: "{{ example_domains }}"
+    service_database_type: postgres
+    service_postgres_tag: 16-alpine
     service_container_publish_ports:
       - "127.0.0.1:8080:8080"
       - "0.0.0.0:4443:8043"