Unable to update the Curl on ubuntu 18.04

I am trying to uprade my curl version from 7.46.0, however, after numerous try the version still remains the same.

root@Ubuntu:~# curl --version
curl 7.46.0 (x86_64-pc-linux-gnu) libcurl/7.46.0 OpenSSL/1.0.2n zlib/1.2.11 nghttp2/1.37.0-DEV
Protocols: dict file ftp ftps gopher http https imap imaps pop3 pop3s rtsp smb smbs smtp smtps telnet tftp
Features: IPv6 Largefile NTLM NTLM_WB SSL libz TLS-SRP HTTP2 UnixSockets

I have tried everything available on the internet to no luck;

sudo apt update && sudo apt upgrade

Then tried the below update.

root@Ubuntu:~# sudo apt install curl
Reading package lists... Done
Building dependency tree
Reading state information... Done
curl is already the newest version (7.58.0-2ubuntu3.8).

May be there are some libraries I need unlink/link, however, I am not sure.

Any help is appreciated.

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