How come Erlang version is not being updated on Ubuntu?

Question

I am currrently having trouble upgrading my current version on Erlang running on Ubuntu 18.04.2 LTS Bionic

These are the steps i used to upgrade Erlang on my machine:

1. added the repository deb http://packages.erlang-solutions.com/ubuntu bionic contrib to my /etc/apt/sources.list
2. installed the GPG key with: wget http://packages.erlang-solutions.com/ubuntu/erlang_solutions.asc and sudo apt-key add erlang_solutions.asc
3. installed latest version sudo apt-get update && sudo apt-get install erlang

In the logs, I see the latest version 25.2.2 being installed over the current version 22.0.7

Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  linux-aws-5.4-headers-5.4.0-1060 linux-aws-5.4-headers-5.4.0-1097 linux-headers-5.4.0-1060-aws linux-headers-5.4.0-1097-aws
  linux-image-5.4.0-1060-aws linux-image-5.4.0-1097-aws linux-modules-5.4.0-1060-aws linux-modules-5.4.0-1097-aws
Use 'sudo apt autoremove' to remove them.
Suggested packages:
  erlang-manpages erlang-doc
The following packages will be upgraded:
  erlang
1 upgraded, 0 newly installed, 0 to remove and 196 not upgraded.
Need to get 17.5 kB of archives.
After this operation, 19.5 kB disk space will be freed.
Get:1 http://packages.erlang-solutions.com/ubuntu bionic/contrib amd64 erlang all 1:25.2.2-2 [17.5 kB]
Fetched 17.5 kB in 1s (22.8 kB/s)
(Reading database ... 261955 files and directories currently installed.)
Preparing to unpack .../erlang_1%3a25.2.2-2_all.deb ...
Unpacking erlang (1:25.2.2-2) over (1:22.0.7-1) ...
Setting up erlang (1:25.2.2-2) ...

but when i tried to verify the version

cat $(dirname $(dirname `which erl`)/$(readlink `which erl`))/../releases/*/OTP_VERSION;
22.0.7

and

~$ erl
Erlang/OTP 22 [erts-10.4.4] [source] [64-bit] [smp:2:2] [ds:2:2:10] [async-threads:1]

Erlang is still running 22.0.7. Am i missing something here?