diff --git a/openstack/__init__.py b/openstack/__init__.py
index 792305e5a..a32487112 100644
--- a/openstack/__init__.py
+++ b/openstack/__init__.py
@@ -67,7 +67,7 @@ def connect(
     cloud: ty.Optional[str] = None,
     app_name: ty.Optional[str] = None,
     app_version: ty.Optional[str] = None,
-    options: ty.Optional[argparse.Namespace] = None,
+    options: ty.Optional[argparse.ArgumentParser] = None,
     load_yaml_config: bool = True,
     load_envvars: bool = True,
     **kwargs: ty.Any,
@@ -78,10 +78,9 @@ def connect(
         The name of the configuration to load from clouds.yaml. Defaults
         to 'envvars' which will load configuration settings from environment
         variables that start with ``OS_``.
-    :param argparse.Namespace options:
-        An argparse Namespace object. Allows direct passing in of
-        argparse options to be added to the cloud config.  Values
-        of None and '' will be removed.
+    :param argparse.ArgumentParser options:
+        An argparse ArgumentParser object. SDK-specific options will be
+        registered, parsed out and used to configure the connection.
     :param bool load_yaml_config:
         Whether or not to load config settings from clouds.yaml files.
         Defaults to True.
diff --git a/openstack/config/__init__.py b/openstack/config/__init__.py
index 3e118b719..75b623db4 100644
--- a/openstack/config/__init__.py
+++ b/openstack/config/__init__.py
@@ -34,8 +34,8 @@ def get_cloud_region(
     )
     if options:
         config.register_argparse_arguments(options, sys.argv, service_key)
-        parsed_options = options.parse_known_args(sys.argv)
+        parsed_options, _rest_of_argv = options.parse_known_args(sys.argv)
     else:
         parsed_options = None
 
-    return config.get_one(options=parsed_options, **kwargs)
+    return config.get_one(argparse=parsed_options, **kwargs)