Issues installing opencv for python

pip3 install opencv-python
Could not find a version that satisfies the requirement opencv-python (from versions: )
No matching distribution found for opencv-python

I have python 3.6.7 installed so it should work. Any idea why I am having issues? Trying to import cv2…

Solved! I figure out I needed to install with this command

sudo apt-get install python3-opencv

and then install numpy

pip3 install -U numpy