Google is raising the price of its YouTube TV online service for new customers as it adds channels from Time Warner Inc's Turner, National Basketball League and Major League Baseball.

Youtube TV will cost new subscribers $40 per month from $35 per month. The service will offer Turner's channels, which include TNT, CNN and TBS, and soon will be adding MLB Network and NBA TV, according to Google.

The new pricing will take effect for new users who sign up after March 13, the company said.

At launch YouTube TV offered almost 50 channels in five markets. With these additions, YouTube TV will have almost 60 channels, and be in 100 markets.

Competing services such as Dish Network Corp's Sling TV, AT&T's DirectTV Now and Hulu are vying to win over the growing number of viewers who are cancelling their cable subscriptions to watch their favorite shows online.

Sling TV's basic offering of 30 channels costs $20, while Hulu's 50- channel package is priced at $39.99.