diff --git a/README.md b/README.md
index 4e96236..ed3aa43 100644
--- a/README.md
+++ b/README.md
@@ -109,7 +109,7 @@ Goto [`docker-compose.yml`](docker-compose.yml) for more advanced example.
 version: '3.9'
 
 x-dls-variables: &dls-variables
-  DLS_URL: localhost # REQUIRED
+  DLS_URL: localhost # REQUIRED, change to your ip or hostname
   DLS_PORT: 443
   LEASE_EXPIRE_DAYS: 90
   DATABASE: sqlite:////app/database/db.sqlite
diff --git a/docker-compose.yml b/docker-compose.yml
index 77dcc07..2ebd525 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,7 +1,7 @@
 version: '3.9'
 
 x-dls-variables: &dls-variables
-  DLS_URL: localhost  # REQUIRED
+  DLS_URL: localhost  # REQUIRED, change to your ip or hostname
   DLS_PORT: 443  # must match nginx listen port
   LEASE_EXPIRE_DAYS: 90
   DATABASE: sqlite:////app/database/db.sqlite