diff --git a/adsms.py b/adsms/__init__.py
similarity index 98%
rename from adsms.py
rename to adsms/__init__.py
index 5e2c384..f10efc9 100755
--- a/adsms.py
+++ b/adsms/__init__.py
@@ -77,7 +77,7 @@ def run(config):
     con.close()
 
 
-if __name__ == "__main__":
+def main():
     parser = argparse.ArgumentParser()
     parser.add_argument("config_file")
     args = parser.parse_args()
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..fc0302d
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,27 @@
+[build-system]
+requires = ["setuptools>=61.0.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "adsms"
+version = "0.0"
+description = "Send SMS aircraft alerts based on ADS-B data"
+readme = "README.md"
+authors = [{ name = "Samuel Sloniker", email = "sam@kj7rrv.com"}]
+classifiers = [
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Development Status :: 2 - Pre-Alpha",
+    "License :: OSI Approved :: GNU Affero General Public License v3",
+]
+dependencies = ["requests"]
+requires-python = ">=3.7"
+
+[project.urls]
+Homepage = "https://git.kj7rrv.com/kj7rrv/adsms"
+
+[project.scripts]
+adsms = "adsms:main"
+
+[tool.setuptools]
+packages = ["adsms"]