Linux Headers

Hello,
I am trying to develop some LKM and need the kernel headers for DietPi (kernel 4.1.7-v7+) but cannot find them. Please!! where can I download the headers from?

Thank you in advance!

We use the same kernel/headers/modules as the official Raspbian image. So this should work: http://raspberrypi.stackexchange.com/questions/42197/getting-kernel-headers-for-raspberry-pi-2