Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
(from wikipedia)
It doesn't forbid you to sub-license the code or redistribute it under another license. You can thus redistribute along LGPL licensed work, as long as you make sure to preserve the original copyright note.
The ISC license is quite simple:
It doesn't forbid you to sub-license the code or redistribute it under another license. You can thus redistribute along LGPL licensed work, as long as you make sure to preserve the original copyright note.