  We report an unexpected positive hydrostatic pressure derivative of the
superconducting transition temperature in the doped topological insulator \NBS
via $dc$ SQUID magnetometry in pressures up to 0.6 GPa. This result is contrary
to reports on the homologues \CBS and \SBS where smooth suppression of $T_c$ is
observed. Our results are consistent with recent Ginzburg-Landau theory
predictions of a pressure-induced enhancement of $T_c$ in the nematic
multicomponent $E_u$ state proposed to explain observations of rotational
symmetry breaking in doped Bi$_2$Se$_3$ superconductors.
