The wikipedia page on the subject seems to say that potential energy does increase mass [1]. [1] https://en.wikipedia.org/wiki/Mass-energy_equivalence#Meanings

The wikipedia page on the subject seems to say that potential energy does increase mass [1]. [1] https://en.wikipedia.org/wiki/Mass-energy_equivalence#Meanings_of_the_strict_mass.E2.80.93energy_equivalence_formula.2C_E.C2.A0.3D.C2.A0mc2 https://en.wikipedia.org/wiki/Mass-energy_equivalence#Meanin...