diff --git a/src/pyelephant.py b/src/pyelephant.py
index ee445bc..6292f86 100755
--- a/src/pyelephant.py
+++ b/src/pyelephant.py
@@ -35,7 +35,8 @@ class Task(Base):
         'Task',
         secondary=depends_association,
         primaryjoin=id == depends_association.c.first_id,
-        secondaryjoin=id == depends_association.c.second_id
+        secondaryjoin=id == depends_association.c.second_id,
+        backref="parents"
     )