Both are correct, but the second is common, whereas the first is formal, almost pedantic. The second version "strands" the preposition at the end. This is completely acceptable. Wikipedia: https://en.wikipedia.org/wiki/Preposition_stranding excerpt Preposition stranding was in use long before any English speakers objected to it.[8] Many sources consider it to be acceptable in standard formal English.[9][10][11] "Great literature from Chaucer to Milton to Shakespeare to the King James version of the Bible was full of so called terminal prepositions."[10] Mignon Fogarty ("Grammar Girl") says, "nearly all grammarians agree that it's fine to end sentences with prepositions, at least in some cases."[12] Fowler's Modern English Usage says that "One of the most persistent myths about prepositions in English is that they properly belong before the word or words they govern and should not be placed at the end of a clause or sentence."[13]

Both are correct.

First one sounds more natural/would be more likely to use it. But from a grammatical standpoint, they are both correct

Both are correct