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---
c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Long: tlsv1.3
Help: TLSv1.3 or greater
Protocols: TLS
Added: 7.52.0
Category: tls
Multi: mutex
See-also:
- tlsv1.2
- tls-max
Example:
- --tlsv1.3 $URL
---
# `--tlsv1.3`
Force 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.
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