diff --git a/builder-registrations.json b/builder-registrations.json
index bff74de..d1c4a82 100644
--- a/builder-registrations.json
+++ b/builder-registrations.json
@@ -88,5 +88,10 @@
         "name": "Eureka",
         "rpc": "rpc.eurekabuilder.xyz",
         "supported-apis": ["refund-recipient", "cancel-endpoint"]
+    },
+    {
+        "name": "Seneschal",
+        "rpc": "https://rpc.seneschal.space",
+        "supported-apis": ["v0.1", "refund-recipient", "cancel-endpoint"]
     }
 ]