diff --git a/packages/backend/src/queue/processors/system/check-expired.ts b/packages/backend/src/queue/processors/system/check-expired.ts
index 0666367f3..ba344b712 100644
--- a/packages/backend/src/queue/processors/system/check-expired.ts
+++ b/packages/backend/src/queue/processors/system/check-expired.ts
@@ -1,6 +1,6 @@
 import Bull from 'bull';
 import { In, LessThan } from 'typeorm';
-import { AttestationChallenges, AuthSessions, Mutings, PasswordResetRequests, Signins } from '@/models/index.js';
+import { AttestationChallenges, AuthSessions, Mutings, Notifications, PasswordResetRequests, Signins } from '@/models/index.js';
 import { publishUserEvent } from '@/services/stream.js';
 import { MINUTE, DAY, MONTH } from '@/const.js';
 import { queueLogger } from '@/queue/logger.js';
@@ -47,6 +47,11 @@ export async function checkExpired(job: Bull.Job<Record<string, unknown>>, done:
 		createdAt: OlderThan(15 * MINUTE),
 	});
 
+	await Notifications.delete({
+		isRead: true,
+		createdAt: OlderThan(3 * MONTH),
+	});
+
 	logger.succ('Deleted expired data.');
 
 	done();