diff --git a/tiramisu/option/__init__.py b/tiramisu/option/__init__.py
index c1739af..202abb5 100644
--- a/tiramisu/option/__init__.py
+++ b/tiramisu/option/__init__.py
@@ -19,7 +19,7 @@ from .broadcastoption import BroadcastOption
 from .domainnameoption import DomainnameOption
 from .emailoption import EmailOption
 from .urloption import URLOption
-from .usernameoption import UsernameOption
+from .usernameoption import UsernameOption, GroupnameOption
 from .dateoption import DateOption
 from .filenameoption import FilenameOption
 from .passwordoption import PasswordOption
@@ -31,4 +31,5 @@ __all__ = ('Leadership', 'OptionDescription', 'DynOptionDescription',
            'IntOption', 'FloatOption', 'StrOption', 'UnicodeOption',
            'IPOption', 'PortOption', 'NetworkOption', 'NetmaskOption',
            'BroadcastOption', 'DomainnameOption', 'EmailOption', 'URLOption',
-           'UsernameOption', 'FilenameOption', 'PasswordOption', 'submulti', 'RegexpOption')
+           'UsernameOption', 'GroupnameOption', 'FilenameOption', 'PasswordOption', 'submulti',
+           'RegexpOption')