How to root verizon samsung galaxy s5

My a5 is running on android 5.0, its model number is SM-G900V and its kernel version is 3.4.0 dpi@SWHD7513 #1 Fri Jul 31 11:35:22 KST 2015
I have tried using towelroot to root my phone but it said that my device is not supported; I am wondering what other possible ways there are to root my phone.