diff --git a/README.md b/README.md
index b2a8187..b12c422 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+# This repository has been archived under Pulsar after migrating to [`second-mate`](https://github.com/pulsar-edit/second-mate) which provides the same utility with an identical API (but uses a WASM version of Oniguruma so it can be used in future versions of Electron and in the browser too).
+
 # First Mate
 [![CI](https://github.com/atom/first-mate/actions/workflows/ci.yml/badge.svg)](https://github.com/atom/first-mate/actions/workflows/ci.yml)