diff --git a/README.md b/README.md
index 404a739..718ffc4 100644
--- a/README.md
+++ b/README.md
@@ -16,3 +16,5 @@ echo "org.oauth3" >> /srv/walnut/packages/sites/EXAMPLE.COM
 ```
 
 This uses the OAuth3 JavaScript SDK `oauth3.js` as a subpackage in `/srv/walnut/packages/pages/issuer@oauth3.org/assets/oauth3.org`.
+
+The 'login popup' is hosted on our tardigrade proxy VM.
\ No newline at end of file