LibertyBus has increased single bus tickets by as much as 20p for contactless customers.
Adult passengers using their cards to pay for their journey will be charged £2.75 now, rather than £2.55, with children paying £1.40, up from £1.27.
Children under 5 can still travel for free.
It is the first price increase since April 2025, following the public transport operator's new 10-year contract.
READ: LibertyBus will continue to operate for the next decade
LibertyBus aims to introduce more 'ultra-low' and 'zero-emission' vehicles to its fleet over its next term, in line with the government's environmental goals.

Haut du Mont trial: Island Energy 'placed health and safety at risk'
Deportation recommended after sex-demanding attacker jailed
Teenage boy arrested on suspicion of sexual touching at Millbrook Park
Eyes up! It's Air Display day...
Haut Du Mont Trial: 'It could explode', jury hears 999 calls
Haut Du Mont Trial: Worker checking gas valves spent almost 'entire' time on his phone
Red Arrows still expected for Jersey Air Show
Haut Du Mont Trial: Gas works were 'sloppy, unsafe, and cut corners', allege prosecutors