From 66cb4181ec6d3336d507c7c1ff100127f56fcc0a Mon Sep 17 00:00:00 2001
From: Chen <c@jia.je>
Date: Thu, 24 Aug 2023 21:46:33 +0800
Subject: [PATCH] Add maintenance notice

---
 README.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/README.md b/README.md
index 422f47948..b3dad9a74 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,13 @@
 
 [![CI](https://github.com/rcore-os/rCore/workflows/CI/badge.svg?branch=master)](https://github.com/rcore-os/rCore/actions)
 
+NO LONGER MAINTAINED. You can see recent developments in:
+
+- <https://github.com/rcore-os/zCore>
+- <https://github.com/rcore-os/arceos>
+- <https://github.com/rcore-os/rCore-Tutorial-Book-v3>
+- <https://github.com/rcore-os/arceos-tutorial-book>
+
 Rust version of THU [uCore OS Plus](https://github.com/chyyuu/ucore_os_plus).
 
 Going to be the next generation teaching operating system.