If you are claiming Universal Credit it is your responsibility to notify the DWP of the rent increase. This can be done by reporting a change of circumstances on your online universal credit account. You can only do this when the new rent amounts are charged from April 2023. You should remember to only include eligible charges.
An eligible charge is a charge that can be included in Housing Benefit or the housing element of Universal Credit. For example the rent charge and any communal charges that make up your total rent due. A charge that is personal to you such as your water charge or personal gas and electric charge, is not an eligible charge.