  Using QCD calculations of the cross section of inclusive dijet
photoproduction in Pb-Pb ultraperipheral collisions in the LHC kinematics as
pseudo-data, we study the effect of including these data using the Bayesian
reweighting technique on nCTEQ15, nCTEQ15np, and EPPS16 nuclear parton
distribution functions (nPDFs). We find that, depending on the assumed error of
the pseudo-data, it leads to a significant reduction of the nPDF uncertainties
at small values of the momentum fraction $x_A$. Taking the error to be 5\%, the
uncertainty of nCTEQ15 and nCTEQ15np nPDFs reduces approximately by a factor of
two at $x_A=10^{-3}$. At the same time, the reweighting effect on EPPS16 nPDFs
is much smaller due to the higher value of the tolerance and a more flexible
parametrization form.
