diff --git a/README-zh.md b/README-zh.md
index d1545ac..ca71398 100644
--- a/README-zh.md
+++ b/README-zh.md
@@ -52,12 +52,12 @@ wget https://git.io/vpnsetup -O vpnsetup.sh && sudo sh vpnsetup.sh
- 封装所有的 VPN 流量在 UDP 协议，不需要 ESP 协议支持
- 可直接作为 Amazon EC2 实例创建时的用户数据使用
- 包含 `sysctl.conf` 优化设置，以达到更佳的传输性能
-- 已测试： Ubuntu 16.04/14.04/12.04， Debian 9/8 和 CentOS 7/6
+- 已测试： Ubuntu 16.04/14.04， Debian 9/8 和 CentOS 7/6
## 系统要求
一个新创建的 Amazon EC2 实例，使用这些映像 (AMIs):
-- Ubuntu 16.04 (Xenial), 14.04 (Trusty) or 12.04 (Precise)
+- Ubuntu 16.04 (Xenial) or 14.04 (Trusty)
- Debian 9 (Stretch) or 8 (Jessie)
- CentOS 7 (x86_64) with Updates
- CentOS 6 (x86_64) with Updates
diff --git a/README.md b/README.md
index 3d06f53..3b2b78c 100644
--- a/README.md
+++ b/README.md
@@ -52,12 +52,12 @@ For other installation options and how to set up VPN clients, read the sections
- Encapsulates all VPN traffic in UDP - does not need ESP protocol
- Can be directly used as "user-data" for a new Amazon EC2 instance
- Includes `sysctl.conf` optimizations for improved performance
-- Tested with Ubuntu 16.04/14.04/12.04, Debian 9/8 and CentOS 7/6
+- Tested with Ubuntu 16.04/14.04, Debian 9/8 and CentOS 7/6
## Requirements
A newly created Amazon EC2 instance, from these images (AMIs):
-- Ubuntu 16.04 (Xenial), 14.04 (Trusty) or 12.04 (Precise)
+- Ubuntu 16.04 (Xenial) or 14.04 (Trusty)
- Debian 9 (Stretch) or 8 (Jessie)
- CentOS 7 (x86_64) with Updates
- CentOS 6 (x86_64) with Updates