Finally, something for G train riders to smile about.

The MTA announced that starting Monday, it will be increasing weekday service on the heavily trafficked subway line by 25 percent to meet the growing demand during the evening rush.

Trains will operate every eight minutes instead of every 10 minutes between the hours of 3 p.m. and 9 p.m.

“This added service will address increased ridership and demand along a growing corridor between Brooklyn and Queens,” the MTA said in a statement.

The Authority said it will also be adding P.A. systems at 12 stations along the line and will ensure that the notoriously shorter trains will stop at the same point on the platform every time — ending what some straphangers call “the G train sprint.”

The MTA agreed to make the changes after conducting a full line review at the request of politicians and the group, “The Riders Alliance.”

“Today the G rarely means the beginning of a great ride,” Senator Daniel Squadron said in a statement.

“These improvements will help commutes on this important line—and hopefully make lives a little easier for the riders who depend on it.”