There has never been a major revision. The last amendment was in 2019, when the commissioner was given responsibility for the Registry of Lobbyists and for building a new disclosure platform. That responsibility formerly lay with the ministère de la Justice, and this created a two-headed system. Fortunately, that responsibility was transferred in 2019 and today we have a new registry, one that, in my opinion, is an example of best practices when it comes to disclosure of lobbying activities.
On February 17th, 2023. See this statement in context.