Failed to verify signature: fetching keys oidc

[fanshan]

Hello,

I want to integrate a OpenID Connect Provider but when Dex try to fetch the jwks_uri of the provider I got this kind error:

2026-07-01T14:08:53.198255286Z time=2026-07-01T14:08:53.197Z level=ERROR msg="failed to authenticate" err="oidc: failed to verify ID Token: failed to verify signature: fetching keys oidc: failed to decode keys: expected Content-Type = application/json, got \"application/jwk-set+json; charset=UTF-8\": go-jose/go-jose: unsupported key type/format {\"keys\":[...removed_for_clarity...]}" request_id=1e6a43db-3821-46dd-9d2a-48789b4e3286

Can I have some help on this issue? Is my provider incompatible with Dex?