diff --git a/pyproject.toml b/pyproject.toml
index 7a5da875..a8db2e54 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,11 +14,14 @@ classifiers = [
     "Operating System :: OS Independent",
     "Topic :: Software Development :: Libraries",
 ]
-build = "build_ext.py"
 packages = [
     { include = "dbus_fast", from = "src" },
 ]
 
+[tool.poetry.build]
+generate-setup-file = true
+script = "build_ext.py"
+
 [tool.poetry.urls]
 "Bug Tracker" = "https://github.com/bluetooth-devices/dbus-fast/issues"
 "Changelog" = "https://github.com/bluetooth-devices/dbus-fast/blob/main/CHANGELOG.md"