The game was annotated using SugaR, an engine by Marco Zerbinati that is derived from Stockfish. I have been unable to find it on any of the usual rating lists and there is some debate as to how good is really is. On one engine forum a poster claimed it seems to be stronger at blitz, but he was not sure about longer time controls. Another poster said he tested it at 40 minutes + 20 seconds increment time control and claimed it outperformed the latest Stockfish development version by +20 Elo after a couple of hundreds of games.
SugaR is free so you can modify it under the terms of the GNU General Public License. It can be downloaded HERE. I am not sure that I would completely trust SugaR without a lot further testing, but would not hesitate to use the updated version of Stockfish.