mTLS client certificate renewal for Payments Apps
Shopify developer change
MerchantDiff detected this entry in Shopify's official developer changelog on April 16, 2026.
This Shopify update is categorized as Platform, Update, Payments Apps API.
What changed
Starting June 15, 2026, Shopify will renew its mTLS client certificate used by Payments Apps to verify that the client initiating the request is Shopify. Unless you're using custom checks or validation logic, this update won't impact your live payments apps, as the new certificate is signed by the same Certificate Authority as the current one.
Who is affected
Payments Apps Reason for the change The current certificate will expire on July 24, 2026. It must be renewed before this date to ensure uninterrupted service.
What action may be needed
Action is required if you use custom certification validation. If you use custom certificate validation Action is required before June 15, 2026. If your app checks the Common Name (CN) or other certificate-specific fields, you must update your validation logic to accept the new certificate. If you use standard mTLS validation No action is required.
Use the official Shopify entry below as the source of truth for technical implementation details, affected APIs, migration instructions and deadlines.
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