HTTPS request with HTTPoison

could you post the openssl/libressl and OTP versions? I just tried your call on my install and your first HTTPoison calls works fine here.

I got:

$ elixir --version
Erlang/OTP 24 [erts-12.0.4] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [jit]

Elixir 1.12.3 (compiled with Erlang/OTP 24)

and

$ openssl version
OpenSSL 1.1.1k  25 Mar 2021

Could be as simple as upgrading one or both of them. (or not :slight_smile: , tls issues are nasty)

It also works if I use only this for ciphers: ciphers: :ssl.cipher_suites(:all, :"tlsv1.2")