Update README.md (#121)
diff --git a/README.md b/README.md
index 0faf0cb..1b34831 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,6 @@
+> [!IMPORTANT]
+> This repo has moved to https://github.com/dart-lang/tools/tree/main/pkgs/source_span
+
[](https://github.com/dart-lang/source_span/actions/workflows/test-package.yml)
[](https://pub.dev/packages/source_span)
[](https://pub.dev/packages/source_span/publisher)