diff --git a/edge/emqx/docker-compose.yml b/edge/emqx/docker-compose.yml
index ae7b5e8b..b82f59b7 100644
--- a/edge/emqx/docker-compose.yml
+++ b/edge/emqx/docker-compose.yml
@@ -2,7 +2,7 @@ version: '3'
 
 services:
   emqx:
-    image: emqx:5.5.0
+    image: emqx:5.8.8
     container_name: emqx
     restart: unless-stopped
     healthcheck:
@@ -13,8 +13,8 @@ services:
     networks:
       emqx_bridge:
     environment:
-      - EMQX_DASHBOARD__DEFAULT_USERNAME=${EMQX_DASHBOARD__DEFAULT_USERNAME}
-      - EMQX_DASHBOARD__DEFAULT_PASSWORD=${EMQX_DASHBOARD__DEFAULT_PASSWORD}
+      - EMQX_DASHBOARD__DEFAULT_USERNAME=${EMQX_DASHBOARD__DEFAULT_USERNAME:-admin}
+      - EMQX_DASHBOARD__DEFAULT_PASSWORD=${EMQX_DASHBOARD__DEFAULT_PASSWORD:-public}
     ports:
       - 1883:1883
       - 8083:8083