Kernel headers problem

[Philly]

Hey guys,

My problem is when i try to update the kernel headers, i get the following;

root@localhost:~# apt-get install linux-headers-`uname -r`
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package linux-headers-3.7-trunk-686-pae
E: Couldn't find any package by regex 'linux-headers-3.7-trunk-686-pae'

anyone have a solution for me?