diff --git a/builder-registrations.json b/builder-registrations.json
index 399db88..6beb0b1 100644
--- a/builder-registrations.json
+++ b/builder-registrations.json
@@ -82,7 +82,7 @@
     {
         "name": "BTCS",
         "rpc": "flashbots.btcs.com",
-        "supported-apis": ["v0.1"]
+        "supported-apis": ["refund-recipient", "cancel-endpoint"]
     },
     {
         "name": "bloXroute",