python3.5 library does not show in pyversion

I am running Matlab 2017a. It is supposed to support 2.7, 3.4, and 3.5. I can run 2.7 fine, but when I switch to 3.5, the library is empty. Do you have some suggestions on this?

In Matlab:

>> pyversion

version: '3.5'

executable: '/Users/wbernalh/.pyenv/versions/3.5.10/bin/python3'

library: ''

home: '/Users/wbernalh/.pyenv/versions/3.5.10'

isloaded: 0

In terminal:

$find /usr/lib -name libpython*

/usr/lib/libpython2.7.dylib

/usr/lib/libpython.dylib