diff --git a/README.md b/README.md
index e97a7731ab4..3c803396a1e 100644
--- a/README.md
+++ b/README.md
@@ -109,3 +109,5 @@ Contributions welcome:
   [admin pages](https://cylc.github.io/cylc-admin/#change-proposals).
 * Touch base in the
   [developers chat](https://matrix.to/#/#cylc-general:matrix.org).
+
+This repository contains some code that was generated by GitHub Copilot.