diff --git a/common/index.ts b/common/index.ts
index 73280d01..b59b4ad4 100644
--- a/common/index.ts
+++ b/common/index.ts
@@ -87,6 +87,8 @@ export const enum RESTJSONErrorCodes {
 	CannotExecuteActionOnThisChannelType = 50024,
 	InvalidOauth2AccessToken,
 
+	InvalidWebhookToken = 50027,
+
 	InvalidRecipients = 50033,
 	OneOfTheMessagesProvidedWasTooOldForBulkDelete,
 	InvalidFormBodyOrContentType,
diff --git a/v8/rest/webhook.ts b/v8/rest/webhook.ts
index bc1135b7..98df6f88 100644
--- a/v8/rest/webhook.ts
+++ b/v8/rest/webhook.ts
@@ -207,12 +207,20 @@ export type RESTPatchAPIWebhookWithTokenMessageJSONBody = Nullable<
 	Pick<RESTPostAPIWebhookWithTokenJSONBody, 'content' | 'embeds' | 'allowed_mentions'>
 >;
 
+/**
+ * https://discord.com/developers/docs/resources/webhook#edit-webhook-message
+ */
 export type RESTPatchAPIWebhookWithTokenMessageFormDataBody =
 	| {
 			payload_json: string;
 	  }
 	| RESTPatchAPIWebhookWithTokenMessageJSONBody;
 
+/**
+ * https://discord.com/developers/docs/resources/webhook#edit-webhook-message
+ */
+export type RESTPatchAPIWebhookWithTokenMessageResult = APIMessage;
+
 /**
  * https://discord.com/developers/docs/resources/webhook#delete-webhook-message
  */