Ask HN: I forgot to remove a swear word from a PR and it got merged. What now?

The swear word was in Polish, so it didn't draw attention in review. This is a public, open-source project. End users won't see the swear word, but maintainers will when they run the test. Submitting a single line PR to remove that swear word sounds like the simplest solution, but is it the best one?