  For each $\mathscr{B}$-free subshift given by
$\mathscr{B}=\{2^ib_i\}_{i\in\mathbb{N}}$, where $\{b_i\}_{i\in\mathbb{N}}$ is
a set of pairwise coprime odd numbers greater than one, it is shown that its
automorphism group consists solely of powers of the shift.
