[FFmpeg-user] Driver does not support the required nvenc API version

[Daniel]

Hello everyone

I am new to ffmpeg and i am trying to encode some video to x265 with 
following command :
ffmpeg -i video.mp4 -c:v hevc_nvenc -c:a aac -b:a 128k output.mp4 and 
what i get is "Driver does not support the required nvenc API version. 
Required: 8.0 Found: 7.1" .
If you can point me on which driver to update i would appreciate. Also 
my OS is ubuntu 16.04  ffmpeg ->

ffmpeg version N-86038-ge312ed0 Copyright (c) 2000-2017 the FFmpeg 
developers
   built with gcc 5.3.1 (Ubuntu 5.3.1-14ubuntu2.1) 20160413
   configuration: --prefix=/usr/src/ffmpeg/ffmpeg_build 
--pkg-config-flags=--static 
--extra-cflags=-I/usr/src/ffmpeg/ffmpeg_build/include 
--extra-ldflags=-L/usr/src/ffmpeg/ffmpeg_build/lib 
--bindir=/usr/src/ffmpeg/bin --enable-gpl --enable-libass 
--enable-libfdk-aac --enable-libfreetype --enable-libmp3lame 
--enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx 
--enable-libx264 --enable-libx265 --enable-nonfree --enable-nvenc 
--enable-opencl --enable-librtmp --enable-libv4l2 --enable-libvpx