Apple is updating the server certificates used by the Apple Push Notification service (APNs). These changes were applied to the sandbox environment on January 20, 2025, and will be implemented in production on February 24, 2025. The new certificate will be issued by the USERTrust RSA Certification Authority under a SHA-2 root.

How This Affects You

Apple periodically updates its security infrastructure to enhance encryption and maintain compliance with modern security standards. If your systems manually verify APNs certificates, you may need to ensure your trust store is up to date to prevent disruptions in push notification delivery.

No Action Needed for OneSignal Customers

If you use OneSignal for push notifications, we’re handling everything for you. We’ve already made the necessary adjustments to accommodate this update, so your push notifications will continue to function without interruption.

Key Dates to Keep in Mind

• January 20, 2025 – APNs sandbox servers switch to the new certificate.
• February 24, 2025 – APNs production servers adopt the new certificate.

OneSignal has you covered, so there’s nothing you need to do! If you have any questions, our support team is happy to help—reach out to us at support@onesignal.com.