--- a/test/netloc_test.py
+++ b/test/netloc_test.py
@@ -1,7 +1,5 @@
 import unittest
 
-from nose.tools import assert_raises
-
 from urlobject.netloc import Netloc
 
 
@@ -49,8 +47,8 @@ class NetlocTest(unittest.TestCase):
                 'zack:5678@github.com:443')
 
     def test_with_password_on_a_netloc_with_no_username_raises_ValueError(self):
-        assert_raises(ValueError,
-                      lambda: Netloc('github.com').with_password('1234'))
+        with self.assertRaises(ValueError):
+            Netloc('github.com').with_password('1234')
 
     def test_with_auth_with_one_arg_adds_username(self):
         assert (Netloc('github.com').with_auth('zack') ==
--- a/test/urlobject_test.py
+++ b/test/urlobject_test.py
@@ -2,7 +2,6 @@ import platform
 import doctest
 import unittest
 
-from nose.tools import assert_raises
 from urlobject import urlobject as urlobject_module
 from urlobject import URLObject
 from urlobject.six import text_type, u, print_
@@ -188,7 +187,8 @@ class URLObjectModificationTest(unittest
 
     def test_with_password_raises_ValueError_when_there_is_no_username(self):
         url = URLObject('https://github.com/')
-        assert_raises(ValueError, lambda: url.with_password('1234'))
+        with self.assertRaises(ValueError):
+            url.with_password('1234')
 
     def test_with_password_replaces_password(self):
         url = URLObject('https://zack:1234@github.com/')