How to install older verion of decK on macOS?

I am trying to install decK version 1.2.1 using the below command on MacOS

brew tap kong/deck && brew install deck@1.2.1

Getting the below error

==> Searching for similarly named formulae...
Error: No similarly named formulae found.
Error: No available formula or cask with the name "deck@1.2.1".
==> Searching for a previously deleted formula (in the last month)...
Error: No previously deleted formula found.
==> Searching taps on GitHub...
Error: No formulae found in taps.

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