diff --git a/lib/types.ts b/lib/types.ts
index 1e57f3c..1a3aa21 100644
--- a/lib/types.ts
+++ b/lib/types.ts
@@ -91,6 +91,7 @@ export type UserAuthenticatedWebhookEvent = WebhookBase & {
       id: string;
     };
   };
+  ip_address: string;
   type: WebhookEventType.userAuthenticated;
 };
 
@@ -100,6 +101,7 @@ export type UserAuthenticationFailedWebhookEvent = WebhookBase & {
       id: string;
     };
   };
+  ip_address: string;
   type: WebhookEventType.userAuthenticationFailed;
 };