Index: update-copyright/tox.ini
===================================================================
new file mode 100644
--- /dev/null
+++ b/update-copyright/tox.ini
@@ -0,0 +1,18 @@
+[tox]
+envlist = py{35,36}
+skipsdist = True
+
+[testenv]
+setenv =
+    PYTHONPATH = {toxinidir}
+
+deps =
+    pytest
+    pytest-cov
+    flake8
+    pep8-naming
+    ../flake8-eyeo
+
+commands =
+    pytest --cov=update_copyright tests
+    flake8 update_copyright.py tests