diff --git a/example/standalone-derby.yaml b/example/standalone-derby.yaml
index 3cbbc2c..eb48cff 100644
--- a/example/standalone-derby.yaml
+++ b/example/standalone-derby.yaml
@@ -1,7 +1,7 @@
 version: "2"
 services:
   nacos:
-    image: nacos/nacos-server:${NACOS_VERSION}
+    image: nacos/nacos-server:v${NACOS_VERSION}
     container_name: nacos-standalone
     environment:
       - PREFER_HOST_MODE=hostname
@@ -26,4 +26,4 @@ services:
     image: grafana/grafana:latest
     ports:
       - 3000:3000
-    restart: on-failure
\ No newline at end of file
+    restart: on-failure