diff --git a/joplin/docker-compose.yml b/joplin/docker-compose.yml
index de74f6b..b5dced6 100644
--- a/joplin/docker-compose.yml
+++ b/joplin/docker-compose.yml
@@ -30,7 +30,7 @@ services:
       - APP_PORT=22300
       - APP_BASE_URL=${APP_BASE_URL}
       - DB_CLIENT=pg
-      - POSTGRES_HOST=joplin-db
+      - POSTGRES_HOST=joplin_db
       - POSTGRES_PORT=5432
       - POSTGRES_DATABASE=${POSTGRES_DB}
       - POSTGRES_USER=${POSTGRES_USER}