  Ultra-high energy cosmic rays are the most extreme energetic particles
detected on Earth, however, their acceleration sites are still mysterious. We
explore the contribution of low-luminosity gamma-ray bursts to the ultra-high
energy cosmic ray flux, since they form the bulk of the nearby population. We
analyse a representative sample of these bursts detected by BeppoSAX, INTEGRAL
and Swift between 1998-2016, and found that in order to reconcile our
theoretical flux with the observed flux, these bursts should accelerate at most
$10^{-13}$ M$_\odot$ of ultra-high energy cosmic rays.
