diff --git a/README.md b/README.md
index 8965a45c..cd8315d7 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,10 @@
 [![Build Status](https://github.com/google/wire/actions/workflows/tests.yml/badge.svg?branch=main)](https://github.com/google/wire/actions)
 [![godoc](https://godoc.org/github.com/google/wire?status.svg)][godoc]
 
+> [!WARNING]
+> This project is no longer maintained.
+>
+> If you wish to update or extend wire, please do so in a fork.
 
 Wire is a code generation tool that automates connecting components using
 [dependency injection][]. Dependencies between components are represented in