I like the Brazilian 'solution' for this: simply add a new star into the constellation and call it a day! ;) PS: for those who don't know, the flag depicts the sky of Rio de Janeiro on Nov 15th, 1889, day of the proclamation of the Republic.

We tried other options, as well as a very similar flag as to the US, check it out: https://en.wikipedia.org/wiki/Flag_of_Brazil