diff --git a/start_offline_webserver.py b/start_offline_webserver.py
index fe3dfd2b..fcf3b281 100644
--- a/start_offline_webserver.py
+++ b/start_offline_webserver.py
@@ -1,3 +1,4 @@
+import argparse
 import http.server
 import socketserver
 import os
@@ -9,8 +10,11 @@ class Handler(http.server.SimpleHTTPRequestHandler):
     extensions_map[''] = 'text/html'
 
 
+parser = argparse.ArgumentParser()
+parser.add_argument('--port', type=int, default=8000)
+args = parser.parse_args()
+
 host = "localhost"
-port = 8000
-with socketserver.TCPServer((host, port), Handler) as httpd:
-    print(f"serving docs at http://{host}:{port}")
+with socketserver.TCPServer((host, args.port), Handler) as httpd:
+    print(f"serving docs at http://{host}:{args.port}")
     httpd.serve_forever()