Hypernuclei are good tools to investigate hyperon-nucleon and hyperon-hyperon interactions. Missing-mass spectroscopy of Λ hypernuclei with the (e, e′K+) reaction, which was established at Jefferson Laboratory (JLab), is able to achieve high resolution and high accuracy. In the next experimental campaign at JLab’s Experimental Hall C starting from 2027, we will measure Λ hypernuclei with a wide mass range from light to heavy systems (6ΛHe, 9ΛLi, 11Λ Be, 27Λ Mg, 40Λ K, 48Λ K, and 208Λ Tl) by using high-resolution spectrometers, HES and HKS. The systematic investigations would provide us new information on ΛN charge symmetry breaking, nuclear deformations, ΛNN three-body interaction, and so on.