Update README.md before archiving (#287)
diff --git a/README.md b/README.md
index be9ed20..5c54a6b 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,6 @@
+> [!IMPORTANT]
+> This repo has moved to https://github.com/dart-lang/core/tree/main/pkgs/async
+
[](https://github.com/dart-lang/async/actions/workflows/test-package.yml)
[](https://pub.dev/packages/async)
[](https://pub.dev/packages/async/publisher)