Comcast has boosted Internet speeds for some of its broadband customers in the northeast.

Xfinity Internet Blast now offers 105Mbps, up from 50Mbps and Xfinity Extreme 105 has been increased to 150Mbps, up from 105Mbps.

The upgrade is free and applies in 14 northeastern states between Maine and Virginia and the District of Columbia. Customers may have to reboot their cable modems to connect with the faster speeds.

Comcast claims a merger with Time Warner Cable will benefit everyone with faster Internet speeds, but the company has increased broadband speeds — especially for premium tier customers — almost annually without the benefit of a merger.

Northeastern Comcast customers have yet to experience the company’s growing reintroduction of usage allowances on its broadband service, now set at 300GB a month in several mostly southern markets.