diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000000000000000000000000000000000000..beab1f325a1935a4f6c92594e614099b4a752c52
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,8 @@
+[tox]
+requires = numpy >= 1.20
+envlist = py37,py38,py39
+
+[testenv]
+deps =
+	pytest
+	hypothesis