diff --git a/instant-distance-py/pyproject.toml b/instant-distance-py/pyproject.toml
new file mode 100644
index 0000000..ba7fa38
--- /dev/null
+++ b/instant-distance-py/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["maturin >= 0.11, < 0.12"]
+build-backend = "maturin"