diff --git a/vaultwarden.yaml b/vaultwarden.yaml
index 6229f34..50b9402 100644
--- a/vaultwarden.yaml
+++ b/vaultwarden.yaml
@@ -4,7 +4,7 @@ services:
     container_name: vaultwarden
     restart: always
     environment:
-      DOMAIN: "https://vault.zazlab.freeddns.org"  #  your domain vaultwarden needs to know its https to work properly with attachments - required when using a reverse proxy
+      DOMAIN: "${VAULTWARDEN_URL}"  #  your domain vaultwarden needs to know its https to work properly with attachments - required when using a reverse proxy
       TZ: America/Chicago
       WEBSOCKET_ENABLED: "true"
       WEB_VAULT_ENABLED: true