From f127be88899e9530b6a58d46b58d7de9adfa5682 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=9B=B6=E4=B8=AD=E6=96=AD=E5=BB=B6=E8=BF=9F=E7=9A=84RTOS?=
 <cosyos@139.com>
Date: Tue, 21 Jul 2026 16:19:42 +0000
Subject: [PATCH] update README.md.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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Signed-off-by: 零中断延迟的RTOS <cosyos@139.com>
---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 1498af10..a47da34d 100644
--- a/README.md
+++ b/README.md
@@ -149,7 +149,7 @@ CosyOS 现支持 keil C51、C251、MDK-Arm（AC5、AC6），GCC-Arm，IAR-EWARM
 |  **Demo-Service**  |  **例程文件** <br>例程文件 for 服务应用 <br> _不会通过安装程序添加到工程中，用户需自行查阅。_ |
 
 ### 文档中心
-#### [API用户参考手册](https://gitee.com/cosyos/cosyos/blob/master/CosyOS-III%20API%E7%94%A8%E6%88%B7%E5%8F%82%E8%80%83%E6%89%8B%E5%86%8C%20V2.3.4.chm)
+#### [API用户参考手册](https://gitee.com/cosyos/cosyos/blob/master/CosyOS-III%20API%E7%94%A8%E6%88%B7%E5%8F%82%E8%80%83%E6%89%8B%E5%86%8C%20V3.0.0.chm)
 
 ### 参与贡献