Zwift MacOS 10.9.5

Hello, I’m new on Zwift and I would like to install it on my Mac Book Pro (2008) wich runs MacOS 10.9.5. It says that the actual version of Zwift only is for OS from 10.10. I don’t want to do any uptate as last time it has slow down a lot my computer, do you know where I can find older version of Zwift.
Thank you very much.

@Emmanuel_Piguet unfortunately there is no way to download and use an outdated version of Zwift. The PC version (and I assume Mac OS one too) forces auto updates to make sure you are running the most recent version as they fix bugs and add features.