I am attempting to use PgfPlots to sketch y=(1-x)^(1/3), for -1.5 < x < 1.5. However, the resultant curve stops abruptly at x=1.

I am attempting to use PgfPlots to sketch y=(1-x)^(1/3), for -1.5 < x < 1.5. However, the resultant curve stops abruptly at x=1.