diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index 0623bab..1045c67 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -19,6 +19,24 @@ services:
     networks:
       - default
       - intranet
+    # The shared `intranet` network has many other containers aliased as
+    # `db` and `redis`; Docker's embedded DNS would pick one of those
+    # before ours. Use the project-prefixed container names instead —
+    # those are globally unique on the daemon.
+    environment:
+      DATABASE_URL: mysql+aiomysql://${MARIADB_USER:-cassandra}:${MARIADB_PASSWORD:-changeme}@readmarkets-db-1:3306/${MARIADB_DATABASE:-cassandra}
+      REDIS_URL: redis://readmarkets-redis-1:6379/0
+
+  scheduler:
+    # Scheduler isn't fronted by NPM, so it doesn't need intranet — but
+    # it does share the same DNS-collision problem on `default` (it only
+    # joins `default`, where our `db` alias would normally win… except
+    # the scheduler too is multi-network if you ever decide to expose
+    # its health endpoint via NPM). Future-proofing: use the explicit
+    # container names here too.
+    environment:
+      DATABASE_URL: mysql+aiomysql://${MARIADB_USER:-cassandra}:${MARIADB_PASSWORD:-changeme}@readmarkets-db-1:3306/${MARIADB_DATABASE:-cassandra}
+      REDIS_URL: redis://readmarkets-redis-1:6379/0
 
 networks:
   intranet: