diff --git a/README.md b/README.md
index 1cfacd5e..4368ef56 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,7 @@
+> [!NOTE]
+> This repository is a historical archive of Automatic Ruby development through 2015.
+> Active development continues in [`id774/automaticruby`](https://github.com/id774/automaticruby).
+
 Automatic Ruby
 ==============