  We present version 2.1 of the High Energy Jets (HEJ) event generator for
hadron colliders. HEJ is a Monte Carlo generator for processes at high energies
with multiple well-separated jets in the final state. To achieve accurate
predictions, conventional fixed-order perturbative QCD is supplemented with an
all-order resummation of large high-energy logarithms. The new version 2.1 now
supports processes with final-state leptons originating from a charged or
neutral vector boson together with multiple jets, in addition to processes
available in earlier versions. Furthermore, the all-order resummation is
extended to include an additional gauge-invariant class of subdominant
logarithmic corrections. HEJ 2.1 can be obtained from https://hej.hepforge.org.
