  The energy injection through Hawking evaporation has been used to put strong
constraints on primordial black holes as a dark matter candidate at masses
below $10^{17}\,\rm{g}$. However, Hawking's semiclassical approximation breaks
down at latest after half-decay. Beyond this point, the evaporation could be
significantly suppressed as was shown in recent work. In this study, we review
existing cosmological and astrophysical bounds on primordial black holes taking
this effect into account. We show that the constraints disappear completely for
a reasonable range of parameters, which opens a new window below
$10^{10}\,\rm{g}$ for light primordial black holes as a dark matter candidate.
