diff --git a/stacks/miniflux/.env.example b/stacks/miniflux/.env.example
index b55a5be..c4efe2a 100644
--- a/stacks/miniflux/.env.example
+++ b/stacks/miniflux/.env.example
@@ -2,6 +2,7 @@ POSTGRES_USER="miniflux"
 POSTGRES_PASSWORD="secret"
 POSTGRES_DB="miniflux"
 
+DATA_DIR="./database"
 DATABASE_URL="postgres://miniflux:secret@db/miniflux?sslmode=disable"
 
 ADMIN_USERNAME="ryuuji"
diff --git a/stacks/miniflux/compose.yml b/stacks/miniflux/compose.yml
index ee88116..b3ac24d 100644
--- a/stacks/miniflux/compose.yml
+++ b/stacks/miniflux/compose.yml
@@ -18,11 +18,8 @@ services:
       POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
       POSTGRES_DB: ${POSTGRES_DB}
     volumes:
-      - miniflux-db:/var/lib/postgresql
+      - ${DATA_DIR}:/var/lib/postgresql
     healthcheck:
       test: ["CMD", "pg_isready", "-U", "miniflux"]
       interval: 10s
       start_period: 30s
-
-volumes:
-  miniflux-db: