1996 Tacoma Slave Cylinder ?

I have a 1996 Tocoma X-Tra Cab 4X4 with the 2.7 motor. Last year I had the clutch replaced. Recently I have been having to add brake fluid to the slave cylinder resevoir. In fact I filled it on Saturday and did not use the truck all weekend. I checked it this morning and the resevoir was dry. When I fill it and pump the clutch up it works fine. Does this usually mean that the slave cylinder needs replacement or is it possibly a leak in the line? This appears to be an easy fix. However, I have never done it and any advise would be appreciated. What else if anything should I look for?

 

x2
If it's been leaking that much fluid it should be pretty easy to find the puddle. Don't forget to check the driver's side floor under the clutch pedal for leaks from the master cylinder.