diff --git a/pyproject.toml b/pyproject.toml
index 1d0baae..e50aaeb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,7 +43,7 @@ classifiers = [
 dynamic = ["dependencies", "optional-dependencies"]
 
 [tool.setuptools]
-py-modules = ["adafruit_azureiot"]
+packages = ["adafruit_azureiot"]
 
 [tool.setuptools.dynamic]
 dependencies = {file = ["requirements.txt"]}