Pubs run by Island brewery Heron and Brearley are putting their prices up today.
Two landlords have confirmed to 3FM the price of a pint will go up by 6p immediately before the TT festival gets underway.
Publicans have been told the brewery's imposing the hike to round off prices.
3FM has contacted Heron and Brearley for a comment.
All aboard for a spooky Groudle Glen
Deadline today for top job in Manx politics
Rob Callister rules out Chief Minister bid
Group calls on parents to delay smartphones for children
MHK calls for government action plan by end of November
September ranks as third-warmest on record
Tree felling means road closure in Foxdale
Thousands of Island households to receive vegan campaign leaflets