diff --git a/pxtarget.json b/pxtarget.json
index 08c85201..0c3b1a22 100644
--- a/pxtarget.json
+++ b/pxtarget.json
@@ -217,6 +217,7 @@
         "privacyUrl": "https://makecode.com/privacy",
         "termsOfUseUrl": "https://makecode.com/termsofuse",
         "githubUrl": "https://github.com/Microsoft/pxt-microbit",
+        "legacyDomain": "pxt.microbit.org",
         "galleries": {
             "Projects": "projects",
             "Examples": "examples"