diff --git a/README.md b/README.md
index 5b9bf43a..50e923a1 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # openadapt-flow
 
+> This repository has moved to the [OpenAdapt monorepo](https://github.com/OpenAdaptAI/OpenAdapt) (`packages/flow`). It is archived and read-only; open issues and PRs there. The PyPI package name `openadapt-flow` is unchanged.
+
 [![CI](https://github.com/OpenAdaptAI/openadapt-flow/actions/workflows/ci.yml/badge.svg)](https://github.com/OpenAdaptAI/openadapt-flow/actions/workflows/ci.yml)
 [![PyPI](https://img.shields.io/pypi/v/openadapt-flow)](https://pypi.org/project/openadapt-flow/)
 [![Python](https://img.shields.io/pypi/pyversions/openadapt-flow)](https://pypi.org/project/openadapt-flow/)