diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 000000000..b6407a20b
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,4 @@
+[tool.black]
+
+target-version = ['py27', 'py33', 'py34', 'py35', 'py36', 'py37', 'py38', 'py39']
+exclude = 'ropetest'