Canadian Model Y LR AWD only had 1 price change since July 2020 and it went up by CAD $1,000 on Oct 7/8, 2021.
US Model Y LR AWD and Performance had a price increase of USD $1,000 on Oct 5/6, 2021.
Note: The info from Electrek above is incorrect. The US Model Y LR AWD was at USD $53,990 prior to the Oct 5/6, 2021.
I guess the main reason for the latest Canadian price adjustment is to account for the foreign exchange difference for MY LR AWD.