Deimos X11 bindings license question

[Gary Willoughby via Digitalmars-d]

Hi,

A few years ago I forked the Deimos X11 bindings[1] repo to add 
dub support. Since then my repo[2] has received bug fixes and as 
such it's being used in many projects. (Also, in the following 
years dub support was added to the Deimos repo too.) I had a 
question from a developer as to the license of the code in my 
repo. I used the LGPL because the original used it.

My question, is there a legal way to change the current license 
to Boost or MIT or something like? Because this particular 
developer wanted to use it in a project where LGPL was 
incompatible.

[1]: https://github.com/D-Programming-Deimos/libX11
[2]: https://github.com/nomad-software/x11