diff --git a/keystone/common/sql/migrate_repo/versions/022_move_legacy_endpoint_id.py b/keystone/common/sql/migrate_repo/versions/022_move_legacy_endpoint_id.py
index 7ccc10789f..0c2db050e8 100644
--- a/keystone/common/sql/migrate_repo/versions/022_move_legacy_endpoint_id.py
+++ b/keystone/common/sql/migrate_repo/versions/022_move_legacy_endpoint_id.py
@@ -30,6 +30,7 @@ def upgrade(migrate_engine):
                 endpoint_table.c.extra: json.dumps(extra),
                 endpoint_table.c.legacy_endpoint_id: legacy_endpoint_id})
             migrate_engine.execute(q)
+    session.close()
 
 
 def downgrade(migrate_engine):
@@ -50,3 +51,4 @@ def downgrade(migrate_engine):
                 endpoint_table.c.extra: json.dumps(extra),
                 endpoint_table.c.legacy_endpoint_id: None})
             migrate_engine.execute(q)
+    session.close()