- Shopify will renew the mTLS client certificate for Payments Apps on June 15, 2026; the new cert is signed by the same CA.
- Apps using standard mTLS validation require no changes, but any custom certificate validation must be updated to accept the new cert before the renewal date.
- The existing certificate expires July 24, 2026, and failing to adjust custom validation may interrupt service.
mTLS client certificate renewal for Payments Apps
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