diff --git a/86.md b/86.md
index fafefbf..4c558fe 100644
--- a/86.md
+++ b/86.md
@@ -85,4 +85,6 @@ This is the list of **methods** that may be supported:
 
 ### Authorization
 
-The request must contain an `Authorization` header with the value set to `Nostr <base64(auth-event)>` in which `<auth-event>` is an event of kind `27235` with a tag `["host", <hostname-of-target-relay>]`, a tag `["payload", <sha256-hash-of-the-request-body-as-lowercase-hex>]` and `created_at` set to the current timestamp.
+The request must contain an `Authorization` header with a valid [NIP-98](./98.md) event, except the `payload` tag is required. The `u` tag is the relay URL.
+
+If `Authorization` is not provided or is invalid, the endpoint should return a 401 response.