Import lantz issue pyqt #80

I use Anaconda 3.6 64 bit on windows, and I get the following error when I try to import lantz. Can you please help?

import lantz
Traceback (most recent call last):

File "", line 1, in
import lantz

File "C:\ProgramData\Anaconda3\lib\site-packages\lantz_init_.py", line 25, in
from .driver import Driver, Feat, DictFeat, Action, initialize_many, finalize_many

File "C:\ProgramData\Anaconda3\lib\site-packages\lantz\driver.py", line 19, in
from .utils.qt import MetaQObject, SuperQObject, QtCore

File "C:\ProgramData\Anaconda3\lib\site-packages\lantz\utils\qt.py", line 27, in
(QT_API, QT_API_PYSIDE, QT_API_PYQT, QT_MOCK))

RuntimeError: Invalid Qt API 'pyqt5', valid values are: 'pyside', 'pyqt', 'mock'