diff --git a/packages/core/src/__tests__/notification-dispatcher.test.ts b/packages/core/src/__tests__/notification-dispatcher.test.ts
index 024dd7a48..f4463c400 100644
--- a/packages/core/src/__tests__/notification-dispatcher.test.ts
+++ b/packages/core/src/__tests__/notification-dispatcher.test.ts
@@ -2,7 +2,7 @@ import { describe, expect, it, vi } from "vitest";
 import { NotificationDispatcher } from "../notification/dispatcher.js";
 import type { NotificationProvider } from "../notification/provider.js";
 import { DEFAULT_GLOBAL_SETTINGS } from "../settings-schema.js";
-import type { NtfyNotificationEvent, NotificationPayload } from "../types.js";
+import { NOTIFICATION_EVENTS, type NtfyNotificationEvent, type NotificationPayload } from "../types.js";
 
 function createProvider(overrides: Partial<NotificationProvider> = {}): NotificationProvider {
   const providerId = overrides.getProviderId?.() ?? "provider-default";
@@ -164,4 +164,8 @@ describe("NotificationDispatcher", () => {
     expect(DEFAULT_GLOBAL_SETTINGS.failureNotificationDelayMs).toBe(30000);
     expect(DEFAULT_GLOBAL_SETTINGS.failureNotificationMode).toBe("sticky-only");
   });
+
+  it("includes oauth-token-expired in known notification events", () => {
+    expect(NOTIFICATION_EVENTS).toContain("oauth-token-expired");
+  });
 });
diff --git a/packages/core/src/types.ts b/packages/core/src/types.ts
index 9eacdac73..9368790bc 100644
--- a/packages/core/src/types.ts
+++ b/packages/core/src/types.ts
@@ -355,7 +355,8 @@ export type NtfyNotificationEvent =
   | "token-budget"
   | "message:agent-to-user"
   | "message:agent-to-agent"
-  | "message:room";
+  | "message:room"
+  | "oauth-token-expired";
 
 /** Known notification event types. Providers may support additional custom events. */
 export const NOTIFICATION_EVENTS = [
@@ -372,6 +373,7 @@ export const NOTIFICATION_EVENTS = [
   "message:agent-to-user",
   "message:agent-to-agent",
   "message:room",
+  "oauth-token-expired",
 ] as const;
 
 /** Notification event type. Known events plus provider-specific custom events. */
diff --git a/packages/engine/src/notifier.ts b/packages/engine/src/notifier.ts
index 2e7063a5c..4d017d82b 100644
--- a/packages/engine/src/notifier.ts
+++ b/packages/engine/src/notifier.ts
@@ -33,6 +33,7 @@ export const DEFAULT_NTFY_EVENTS: readonly NtfyNotificationEvent[] = [
   "message:agent-to-user",
   "message:agent-to-agent",
   "message:room",
+  "oauth-token-expired",
 ] as const;
 
 export interface NtfyNotificationConfigInput {