---
number: 38771
slug: 38771-changes-to-custom-jwt-and-signing-keys-issue-resolution
published: 2025-09-17
discussion: https://github.com/orgs/supabase/discussions/38771
labels:
  - postgrest
page: https://supabase.com/changelog/38771-changes-to-custom-jwt-and-signing-keys-issue-resolution
---

# Changes to Custom JWT and Signing Keys issue resolution

On July 24, 2025 Supabase deployed an updated version of our Data API (Postgrest) v13 that came with a more strict approach to JWT validation.

Some customers experienced issues when using custom JWT. 

Recently, we published updates to our documentation at https://supabase.com/docs/guides/auth/jwts#verifying-with-the-legacy-jwt-secret-or-a-shared-secret-signing-key and https://supabase.com/docs/guides/auth/signing-keys#getting-started that give instructions on how to re-import the custom signing key, which will resolve this issue going forward.