diff --git a/progit/hooks/irc.py b/progit/hooks/irc.py
index 40e2f3a..b844611 100644
--- a/progit/hooks/irc.py
+++ b/progit/hooks/irc.py
@@ -15,6 +15,7 @@ import pygit2
 import wtforms
 from flask.ext import wtf
 from sqlalchemy.orm import relation
+from sqlalchemy.orm import backref
 
 from progit.hooks import BaseHook, RequiredIf
 from progit.lib.model import BASE, Project
@@ -47,8 +48,11 @@ class IrcTable(BASE):
     ssl = sa.Column(sa.Boolean, nullable=False, default=True)
 
     project = relation(
-        'Project', remote_side=[Project.id], backref='irc_hook',
-        cascade="delete, delete-orphan", single_parent=True)
+        'Project', remote_side=[Project.id],
+        backref=backref(
+            'irc_hook', cascade="delete, delete-orphan",
+            single_parent=True)
+        )
 
 
 class IrcForm(wtf.Form):
diff --git a/progit/hooks/mail.py b/progit/hooks/mail.py
index 70334d6..9a08a34 100644
--- a/progit/hooks/mail.py
+++ b/progit/hooks/mail.py
@@ -16,6 +16,7 @@ import pygit2
 import wtforms
 from flask.ext import wtf
 from sqlalchemy.orm import relation
+from sqlalchemy.orm import backref
 
 from progit.hooks import BaseHook, RequiredIf
 from progit.lib.model import BASE, Project
@@ -42,8 +43,11 @@ class MailTable(BASE):
     active = sa.Column(sa.Boolean, nullable=False, default=False)
 
     project = relation(
-        'Project', remote_side=[Project.id], backref='mail_hook',
-        cascade="delete, delete-orphan", single_parent=True)
+        'Project', remote_side=[Project.id],
+        backref=backref(
+            'mail_hook', cascade="delete, delete-orphan",
+            single_parent=True)
+        )
 
 
 class MailForm(wtf.Form):
diff --git a/progit/hooks/progit_hook.py b/progit/hooks/progit_hook.py
index 5b53de1..2f58d15 100644
--- a/progit/hooks/progit_hook.py
+++ b/progit/hooks/progit_hook.py
@@ -16,6 +16,7 @@ import pygit2
 import wtforms
 from flask.ext import wtf
 from sqlalchemy.orm import relation
+from sqlalchemy.orm import backref
 
 from progit.hooks import BaseHook
 from progit.lib.model import BASE, Project
@@ -41,8 +42,11 @@ class ProgitTable(BASE):
     active = sa.Column(sa.Boolean, nullable=False, default=False)
 
     project = relation(
-        'Project', remote_side=[Project.id], backref='progit_hook',
-        cascade="delete, delete-orphan", single_parent=True)
+        'Project', remote_side=[Project.id],
+        backref=backref(
+            'progit_hook', cascade="delete, delete-orphan",
+            single_parent=True)
+        )
 
 
 class ProgitForm(wtf.Form):
diff --git a/progit/hooks/progit_ticket_hook.py b/progit/hooks/progit_ticket_hook.py
index 92ee3eb..853f59a 100644
--- a/progit/hooks/progit_ticket_hook.py
+++ b/progit/hooks/progit_ticket_hook.py
@@ -17,6 +17,7 @@ import pygit2
 import wtforms
 from flask.ext import wtf
 from sqlalchemy.orm import relation
+from sqlalchemy.orm import backref
 
 from progit.hooks import BaseHook
 from progit.lib.model import BASE, Project
@@ -42,8 +43,11 @@ class ProgitTicketsTable(BASE):
     active = sa.Column(sa.Boolean, nullable=False, default=False)
 
     project = relation(
-        'Project', remote_side=[Project.id], backref='progit_hook_tickets',
-        cascade="delete, delete-orphan", single_parent=True)
+        'Project', remote_side=[Project.id],
+        backref=backref(
+            'progit_hook_tickets', cascade="delete, delete-orphan",
+            single_parent=True)
+        )
 
 
 class ProgitTicketsForm(wtf.Form):