When was Kyiv respelled in the Exile Legacy?

I was perusing the Wiki and noticed that in Exile Legacy the name of the Kyiv was respelled to its proper spelling (I distinctly remember that it was spelled Kiev when I was playing back when Exile DLC just released). This can seem like a minor thing, but I'm glad that the spelling based on the Ukrainian pronounciation is becoming more common.

I'm really interested when this change was made and if it's mentioned in the changelogs or whatever. Trying to search in the steam changelogs didn't bring up anything, but judging by the wiki page history the change happened somewhere in 2020. Does anyone know more?