--- a
+++ b/tox.ini
@@ -0,0 +1,25 @@
+[tox]
+envlist = py36, py37, py38, flake8
+
+[travis]
+python =
+    3.10: py310
+    3.9: py39
+    3.8: py38
+
+[testenv:flake8]
+basepython = python
+deps = flake8
+commands = flake8 wsic tests
+
+[testenv]
+setenv =
+    PYTHONPATH = {toxinidir}
+deps =
+    -r{toxinidir}/requirements.txt
+; If you want to make tox run the tests with the same versions, create a
+; requirements.txt with the pinned versions and uncomment the following line:
+;     -r{toxinidir}/requirements.txt
+commands =
+    pip install -U pip
+    pytest