curl/docs/cmdline-opts/tlsv1.3.d

c: Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Long: tlsv1.3
Help: Use TLSv1.3 or greater
Protocols: TLS
Added: 7.52.0
Category: tls
Example: --tlsv1.3 $URL
See-also: tlsv1.2 tls-max
Multi: mutex
---
Forces curl to use TLS version 1.3 or later when connecting to a remote TLS
server.

If the connection is done without TLS, this option has no effect. This
includes QUIC-using (HTTP/3) transfers.

Note that TLS 1.3 is not supported by all TLS backends.