curl/docs/cmdline-opts/tlsv1.0.md

c	SPDX-License-Identifier	Long	Help	Protocols	Added	Category	Multi	See-also	Example
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.	curl	tlsv1.0	TLSv1.0 or greater	TLS	7.34.0	tls	mutex	tlsv1.3	--tlsv1.0 $URL

--tlsv1.0

Force curl to use TLS version 1.0 or greater when connecting to a remote TLS server.

In old versions of curl this option was documented to allow only TLS 1.0. That behavior was inconsistent depending on the TLS library. Use --tls-max if you want to set a maximum TLS version.