  We obtain bounds on dark matter annihilation using 14 years of publicly
available Fermi-LAT data from a set of 54 dwarf spheroidal galaxies, using
spectral information from 16 energy bins. We perform this analysis using our
updated and publicly available code MADHATv2, which can be used to test a
variety of models for dark matter particle physics and astrophysics in an
accessible manner. In particular, we note that including Carina III in the
analysis strengthens constraints on $s$-wave annihilation into two-body
Standard Model final states by a factor of $\sim 3$ but broadens the error on
the constraint due to the large uncertainty of its $J$-factor. Our findings
illustrate the importance of verifying if Carina III is in fact a dwarf
spheroidal galaxy and measuring more precisely its $J$-factor. More generally,
they highlight the significance of forthcoming discoveries of nearby
ultra-faint dwarfs for dark matter indirect detection.
