  The Short-Baseline Neutrino program in Fermilab aims to resolve the nature of
the low-energy excess events observed in LSND and MiniBooNE, and analyze with
unprecedented precision neutrino interactions with argon. These studies require
reliable estimate of neutrino cross sections, in particular for charged current
quasielastic scattering (CCQE). Here, we report updates of the NuWro Monte
Carlo generator that, most notably, bring the state-of-the-art spectral
functions to model the ground state properties of the argon nucleus, and
improve the accuracy of the cross sections at low energies by accounting for
the effects of the nuclear Coulomb potential. We discuss these developments in
the context of electron and neutrino interactions, by comparing updated NuWro
predictions to experimental data from Jefferson Laboratory Hall A and
MicroBooNE. The MicroBooNE CCQE data are described with the $\chi^2$ per degree
of freedom of 0.7, compared with 1.0 in the local Fermi gas model. The largest
improvement is observed for the angular distributions of the produced protons,
where the $\chi^2$ reduces nearly by half. Being obtained using the axial form
factor parametrization from MINERvA, our results indicate a~consistency between
the CCQE measurements in MINERvA and MicroBooNE.
