HIP 38594 is a cool M-dwarf (about 0.61 solar masses, 4,086 K), 17.8 light-years from Earth. HIP 38594 b is a 8.1-Earth-mass planet, with an orbital period of 60.7 days, at 0.256 AU from its star, on an eccentric orbit (e ≈ 0.17), discovered in 2020 via radial velocity. HIP 38594 c is a 0.15-Jupiter-mass companion, with an orbital period of 9.52 years, at 3.805 AU from its star, on an eccentric orbit (e ≈ 0.16), discovered in 2020 via radial velocity. Mutual gravitational tugs between the planets can slowly reshape their orbits, preserving clues to the system's assembly.