diff --git a/config.example.yaml b/config.example.yaml
index 6cc062d9..8e1051d6 100644
--- a/config.example.yaml
+++ b/config.example.yaml
@@ -6,6 +6,14 @@
 server:
   address: ":4533"
 
+storage:
+  # On-disk root for cached runtime artifacts (currently playlist cover
+  # collages under <data_dir>/playlist_covers/). Default: "./data" relative
+  # to the working directory. Production deployments should set an absolute
+  # path on persistent storage.
+  # Env: SMARTMUSIC_STORAGE_DATA_DIR
+  data_dir: "./data"
+
 database:
   # Postgres connection string, e.g. postgres://minstrel:minstrel@localhost:5432/minstrel?sslmode=disable
   url: ""