diff --git a/test/README.md b/test/README.md
index 990ff84..56881fe 100644
--- a/test/README.md
+++ b/test/README.md
@@ -1,6 +1,6 @@
 # Test compose
 
-This folder contains a simple Docker Compose stack to run the Go server together with an MQTT broker and a Python subscriber client.
+This folder contains a simple Docker Compose stack to run the Go server together with a MySQL database, an MQTT broker, and a Python subscriber client.
 
 Quickstart:
 
@@ -10,6 +10,7 @@ docker compose up --build
 ```
 
 - The Go server is built from the repository `Dockerfile` and is configured via environment variables in `docker-compose.yml`.
+- The MySQL database is initialized with the schema from `../ai-improved.sql`.
 - The MQTT broker is `eclipse-mosquitto` and is exposed on port `1883`.
 - The `subscriber` service runs `subscribe.py` and prints any messages published to the `lambdaiot` topic.