No, not should it be, it's in the 0.23 maintenance branch. That's distinct from master which will become 0.24.

@ethomson okay. I didn't see where master had updated to have libgit 0.25.1 and it does seem odd to not show that there is a v0.23.1 release in the changes file on master.

I would like to try to get LibGit2Sharp following along with libgit2's release schedule, and then mirror the libgit2 release numbers for clarity. I hope this will help ease some of the confusion - even I don't remember how these things correlate without digging in deeply.