floitsch 08/18/2026 02:12 PMToit's certificate roots are extracted from Mozilla.
Mozilla hasn't added this root yet. That's a long process which can take up to two years (but is usually faster).
Root YR is cross-signed by ISRG Root X1, but Toit only accepts this if the server also sends the complete cross-signed chain (leaf -> YR1 -> Root YR signed by ISRG Root X1). If you have any say in how the certificates are sent, that's the cleanest solution (for now).