  Secondary messengers such as neutrinos and photons are expected to be
produced in interactions of ultra-high-energy cosmic rays (UHECRs) with
extragalactic background photons. Their propagation could be altered by the
effects of Lorentz invariance violation. In this work, we have developed an
extension of the SimProp code that includes some Lorentz-violating scenarios
affecting the propagation of neutrinos. We present the corresponding expected
cosmogenic neutrino fluxes for three different astrophysical scenarios for the
production of UHECRs. These results can be used to put constraints on the scale
of Lorentz violation in the neutrino sector.
