diff --git a/main.py b/main.py
index f553ac2..f42bc36 100644
--- a/main.py
+++ b/main.py
@@ -4,20 +4,32 @@ from jinja2 import TemplateNotFound
 import json
 import pathlib
 
+from argparse import ArgumentParser
+
 app = Flask(__name__)
 
-@app.route('/assets/<path:path>')
-def send_assets(path):
-    return send_from_directory('assets', path)
 
-@app.route('/', defaults={'path': 'index'})
-@app.route('/<path:path>.html')
+@app.route("/assets/<path:path>")
+def send_assets(path):
+    return send_from_directory("assets", path)
+
+
+@app.route("/", defaults={"path": "index"})
+@app.route("/<path:path>.html")
 def catch_all(path):
     try:
-        services = json.loads((pathlib.Path(__file__).parent / "services.json").read_text())
-        return render_template(f'{path}.html', services=services)
+        services = json.loads(
+            (pathlib.Path(__file__).parent / "services.json").read_text()
+        )
+        return render_template(f"{path}.html", services=services)
     except TemplateNotFound:
         return "404 Not Found", 404
 
-if __name__ == '__main__':
-    app.run(port=9810)
+
+if __name__ == "__main__":
+    parser = ArgumentParser(description="Run the private.coffee web server.")
+    parser.add_argument("--port", type=int, default=9810)
+    parser.add_argument("--debug", action="store_true")
+    args = parser.parse_args()
+
+    app.run(port=args.port, debug=args.debug)