diff --git a/vendor/registrasion/registrasion/tests/test_invoice.py b/vendor/registrasion/registrasion/tests/test_invoice.py
index b77fa22352ecedf06e1401ce2f063cdbe3813a0e..f4d511a9397aaa40013825b443540a171c1a701d 100644
--- a/vendor/registrasion/registrasion/tests/test_invoice.py
+++ b/vendor/registrasion/registrasion/tests/test_invoice.py
@@ -98,7 +98,8 @@ class InvoiceTestCase(TestHelperMixin, RegistrationCartTestCase):
 
     def test_total_payments_balance_due(self):
         invoice = self._invoice_containing_prod_1(2)
-        for i in xrange(0, invoice.invoice.value):
+        invoice_value = int(invoice.invoice.value)
+        for i in range(0, invoice_value):
             self.assertTrue(
                 i + 1, invoice.invoice.total_payments()
             )
@@ -175,7 +176,7 @@ class InvoiceTestCase(TestHelperMixin, RegistrationCartTestCase):
         invoice_1.refund()
 
         cart.refresh_from_db()
-        self.assertEquals(commerce.Cart.STATUS_RELEASED, cart.status)
+        self.assertEqual(commerce.Cart.STATUS_RELEASED, cart.status)
 
     def test_invoice_voids_self_if_cart_changes(self):
         current_cart = TestingCartController.for_user(self.USER_1)
@@ -322,12 +323,12 @@ class InvoiceTestCase(TestHelperMixin, RegistrationCartTestCase):
         )
         inv = TestingInvoiceController(_invoice)
 
-        self.assertEquals(
+        self.assertEqual(
             inv.invoice.value,
             sum(i[1] for i in description_price_pairs)
         )
 
-        self.assertEquals(
+        self.assertEqual(
             len(inv.invoice.lineitem_set.all()),
             len(description_price_pairs)
         )
@@ -336,37 +337,37 @@ class InvoiceTestCase(TestHelperMixin, RegistrationCartTestCase):
 
     def test_sends_email_on_invoice_creation(self):
         invoice = self._invoice_containing_prod_1(1)
-        self.assertEquals(1, len(self.emails))
+        self.assertEqual(1, len(self.emails))
         email = self.emails[0]
-        self.assertEquals([self.USER_1.email], email["to"])
-        self.assertEquals("invoice_created", email["kind"])
-        self.assertEquals(invoice.invoice, email["context"]["invoice"])
+        self.assertEqual([self.USER_1.email], email["to"])
+        self.assertEqual("invoice_created", email["kind"])
+        self.assertEqual(invoice.invoice, email["context"]["invoice"])
 
     def test_sends_first_change_email_on_invoice_fully_paid(self):
         invoice = self._invoice_containing_prod_1(1)
 
-        self.assertEquals(1, len(self.emails))
+        self.assertEqual(1, len(self.emails))
         invoice.pay("Partial", invoice.invoice.value - 1)
         # Should have an "invoice_created" email and nothing else.
-        self.assertEquals(1, len(self.emails))
+        self.assertEqual(1, len(self.emails))
         invoice.pay("Remainder", 1)
-        self.assertEquals(2, len(self.emails))
+        self.assertEqual(2, len(self.emails))
 
         email = self.emails[1]
-        self.assertEquals([self.USER_1.email], email["to"])
-        self.assertEquals("invoice_updated", email["kind"])
-        self.assertEquals(invoice.invoice, email["context"]["invoice"])
+        self.assertEqual([self.USER_1.email], email["to"])
+        self.assertEqual("invoice_updated", email["kind"])
+        self.assertEqual(invoice.invoice, email["context"]["invoice"])
 
     def test_sends_email_when_invoice_refunded(self):
         invoice = self._invoice_containing_prod_1(1)
 
-        self.assertEquals(1, len(self.emails))
+        self.assertEqual(1, len(self.emails))
         invoice.pay("Payment", invoice.invoice.value)
-        self.assertEquals(2, len(self.emails))
+        self.assertEqual(2, len(self.emails))
         invoice.refund()
-        self.assertEquals(3, len(self.emails))
+        self.assertEqual(3, len(self.emails))
 
         email = self.emails[2]
-        self.assertEquals([self.USER_1.email], email["to"])
-        self.assertEquals("invoice_updated", email["kind"])
-        self.assertEquals(invoice.invoice, email["context"]["invoice"])
+        self.assertEqual([self.USER_1.email], email["to"])
+        self.assertEqual("invoice_updated", email["kind"])
+        self.assertEqual(invoice.invoice, email["context"]["invoice"])