There's a tiny bit of variation across the tree-of-life, see https://en.wikipedia.org/wiki/Genetic_code#Alternative_genetic_codes https://en.wikipedia.org/wiki/

There's a tiny bit of variation across the tree-of-life, see https://en.wikipedia.org/wiki/Genetic_code#Alternative_genetic_codes https://en.wikipedia.org/wiki/Genetic_code#Alternative_genet... But the variation is in the one place you could possibly have it - by changing the interpretation of one or two of the three available STOP codons.