pip-comple error (resolve by updating pip-tools)

gistfile1.txt

# The following packages are considered to be unsafe in a requirements file:
# setuptools
pip-compile -U -o requirements/requirements.insights.txt \
	setup.py requirements/requirements.insights.in
Traceback (most recent call last):
  File "/home/adrian/venvs/galaxy_ng_2/bin/pip-compile", line 8, in <module>
    sys.exit(cli())
  File "/home/adrian/venvs/galaxy_ng_2/lib64/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/home/adrian/venvs/galaxy_ng_2/lib64/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/home/adrian/venvs/galaxy_ng_2/lib64/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/adrian/venvs/galaxy_ng_2/lib64/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/home/adrian/venvs/galaxy_ng_2/lib64/python3.6/site-packages/click/decorators.py", line 21, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/adrian/venvs/galaxy_ng_2/lib64/python3.6/site-packages/piptools/scripts/compile.py", line 458, in cli
    results = resolver.resolve(max_rounds=max_rounds)
  File "/home/adrian/venvs/galaxy_ng_2/lib64/python3.6/site-packages/piptools/resolver.py", line 164, in resolve
    "This is likely a bug.".format(max_rounds=max_rounds)
RuntimeError: No stable configuration of concrete packages could be found for the given constraints after 10 rounds of resolving.
This is likely a bug.