keymgr "list" output doesn't show key size

When I request keys for a zone, the output doesn't show key sizes:

# keymgr probes.atlas.ripe.net list
57e974b711b1bf35babd09e7166a8ec4fdcc3057 ksk=yes zsk=no  tag=34250 algorithm=8 public-only=no  created=1533825596 pre-active=0 publish=1533825596 ready=1533825596 active=1533825799 retire-active=0 retire=0 post-active=0 remove=0
ce492e1c09dc69b06865b0f018a6560d41d12c19 ksk=no  zsk=yes tag=18949 algorithm=8 public-only=no  created=1533897596 pre-active=0 publish=1533897596 ready=0 active=1533901196 retire-active=0 retire=0 post-active=0 remove=0

It would be useful to see the key size in bits.