Using heed with rkyv Error: Decoding alignment

I was hoping to store some data into heed and de-serialize using rkyv, the types seem to work out but I'm getting an alignment error.

Error: Decoding(ContextError(ArchiveError(Underaligned { expected_align: 8, actual_align: 1 })))

Is there a way to get an aligned slice out of lmdb/heed?