diff --git a/README-zh.md b/README-zh.md
index d277e9a..629ecdc 100644
--- a/README-zh.md
+++ b/README-zh.md
@@ -10,7 +10,7 @@ IPsec VPN 可以加密你的网络流量，以防止在通过因特网传送时
 
 我们将使用 [Libreswan](https://libreswan.org/) 作为 IPsec 服务器，以及 [xl2tpd](https://github.com/xelerance/xl2tpd) 作为 L2TP 提供者。
 
-**[» :book: 电子书：搭建自己的 IPsec VPN, OpenVPN 和 WireGuard 服务器](https://mybook.to/vpnzhs)**
+**[» :book: Book: Build Your Own VPN Server: A Step by Step Guide](https://mybook.to/vpnguide)**
 
 ## 快速开始
 
diff --git a/README.md b/README.md
index dedc8c3..1f7e6f6 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ An IPsec VPN encrypts your network traffic, so that nobody between you and the V
 
 We will use [Libreswan](https://libreswan.org/) as the IPsec server, and [xl2tpd](https://github.com/xelerance/xl2tpd) as the L2TP provider.
 
-**[» :book: Book: Set Up Your Own IPsec VPN, OpenVPN and WireGuard Server](https://mybook.to/vpn)**
+**[» :book: Book: Build Your Own VPN Server: A Step by Step Guide](https://mybook.to/vpnguide)**
 
 ## Quick start