tox works with pypy3 v6.1.0-alpha
# and then run "tox" from this directory.
[tox]
-# does not work with pypy3 v6.0.0 - 2018-11-28
-envlist = py36, py37
+# works with pypy3 v6.1.0-alpha - 2018-12-08
+envlist = py36, py37, pypy3
[testenv]
commands = pytest tests integration_tests
