Period-period derivative diagram for Galactic millisecond pulsars. Grey circles show pulsars from PSRCat 1.70, while smaller black points denote MSPs found targeting Fermi unassociated point sources. Red stars are the MSPs from this paper. The Ṗ used is, whenever possible, the one corrected for the Shklovskii effect. Equal spin-down energy lines are drawn as dotted and equal surface magnetic field lines are dashed.