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+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Long: proxy-tls13-ciphers
+Arg: <ciphersuite list>
+help: TLS 1.3 proxy cipher suites
+Protocols: TLS
+Category: proxy tls
+Added: 7.61.0
+Multi: single
+See-also:
+ - tls13-ciphers
+ - curves
+ - proxy-ciphers
+Example:
+ - --proxy-tls13-ciphers TLS_AES_128_GCM_SHA256 -x proxy $URL
+---
+
+# `--proxy-tls13-ciphers`
+
+Specifies which cipher suites to use in the connection to your HTTPS proxy
+when it negotiates TLS 1.3. The list of ciphers suites must specify valid
+ciphers. Read up on TLS 1.3 cipher suite details on this URL:
+
+https://curl.se/docs/ssl-ciphers.html
+
+This option is currently used only when curl is built to use OpenSSL 1.1.1 or
+later. If you are using a different SSL backend you can try setting TLS 1.3
+cipher suites by using the --proxy-ciphers option.