1 files changed, 4 insertions, 2 deletions

diff --git a/src/mailman_pgp/plugin.py b/src/mailman_pgp/plugin.py
index 033c46d..3ef771c 100644
--- a/src/mailman_pgp/plugin.py
+++ b/src/mailman_pgp/plugin.py
@@ -1,4 +1,5 @@
 """A PGP plugin for GNU Mailman."""
+
 from mailman.interfaces.listmanager import ListDeletedEvent
 from mailman.interfaces.plugin import IPlugin
 from public import public
@@ -35,5 +36,6 @@ def on_delete(mlist):
     encrypted_list = config.db.session.query(EncryptedMailingList).filter_by(
         list_id=mlist.list_id).first()
     if encrypted_list:
-        with transaction():
-            config.db.session.delete(encrypted_list)
+        with transaction() as session:
+            # TODO shred the list key
+            session.delete(encrypted_list)