From 28bb57e80ec3b0d520a2da666418aa30c95dd100 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=82=9F=E7=A9=BACRM?= <service@5kcrm.com>
Date: Mon, 8 Feb 2021 16:30:27 +0800
Subject: [PATCH] update README.md.

---
 README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/README.md b/README.md
index 561cded..618c2c8 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,8 @@ QQ群交流群⑩群：[486745026](https:////shang.qq.com/wpa/qunwpa?idkey=f4687
 
 如需调整前端代码，请单独下载前端代码，[查看11.0PHP版前端仓库](https://gitee.com/wukongcrm_admin/P72crm_web)
 
+ **特别声明：如9.0版本升级至11.0版本，执行升级脚本前，请先备份数据库！！！** 
+
 ## 主要技术栈
 
 后端框架：ThinkPHP 5.0.24