1-Wire long wire around 10m.

Have this setup with a 16F18887 and a DS18B20 temp probe,
Setup is working fine over 50 cm wire, but when i encrease to around 10m
i get no reading,
Have an old setup with a 16F690 same wire, and that works fine.
Use a 5 k pull up near the sensor,
Have also tried to place the pull up near PIC,

What can i do to get a reading ?

And Spinaker, no need to say not again,

Rgds
Sten