Hey everyone! 
I’ve recently had some maintenance work done on my Toyota Yaris GLI Manual Transmission. The throttle body and engine got a tune-up, the front disk and pads were changed, and the rear drum bush was replaced. I’ve noticed that the gear shift, brakes, acceleration, and clutch are all running smoothly now, which is great! 

However, I’ve also observed that the RPM seems to have increased to around 3400 at 120 KM/h on highways. I’m not sure if this is a normal RPM at this speed, or if something during the maintenance might have caused it to increase. Or maybe I’m just overthinking it? 
Would love to hear your thoughts and experiences. Thanks in advance! 