diff --git a/README.md b/README.md
index 067618faa..29fecaca3 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,6 @@ if you're looking for something to do.
 * Test a prerelease version of iD:
   * Stable mirror of `release` branch: https://ideditor-release.netlify.app
   * Development mirror of `develop` branch + latest translations: https://ideditor.netlify.app
-  * Development mirror of `v3-prototype` branch: https://preview.ideditor.com/master
 
 Come on in, the water's lovely. More help? Ping `Martin Raifer`/`tyr_asd` or `bhousel` on:
 * [OpenStreetMap US Slack](https://slack.openstreetmap.us/) (`#id` channel)