diff --git a/tox.ini b/tox.ini
new file mode 100644
index 00000000..33bb87f0
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,15 @@
+[tox]
+envlist =
+    py35
+    py36
+    py37
+    py38
+    py39
+    pypy3
+
+skip_missing_interpreters = true
+
+
+[testenv]
+deps = pytest
+commands = py.test {posargs}