The LINQPad driver v54 has version 5.3, both in the name and in the assembly info.
We'll check it out, thank for reporting.
ugh... and I did check everything trice, apparently not good enough! will correct it but will be later this week. THanks for reporting!
No need to hurry. I'm using a customized version of the driver, so I fixed the version already.
Corrected, new version uploaded
Thanks!