1 files changed, 4 insertions, 5 deletions

diff --git a/src/mailman/archiving/prototype.py b/src/mailman/archiving/prototype.py
index 153c44b69..e564b40b1 100644
--- a/src/mailman/archiving/prototype.py
+++ b/src/mailman/archiving/prototype.py
@@ -30,14 +30,13 @@ import errno
 import logging
 
 from datetime import timedelta
-from mailbox import Maildir
-from urlparse import urljoin
-
 from flufl.lock import Lock, TimeOutError
-from zope.interface import implementer
-
+from mailbox import Maildir
 from mailman.config import config
 from mailman.interfaces.archiver import IArchiver
+from six.moves.urllib_parse import urljoin
+from zope.interface import implementer
+
 
 log = logging.getLogger('mailman.error')