diff --git a/kmip/tests/unit/pie/test_client.py b/kmip/tests/unit/pie/test_client.py
index 7c8964a..41e1c20 100644
--- a/kmip/tests/unit/pie/test_client.py
+++ b/kmip/tests/unit/pie/test_client.py
@@ -91,7 +91,7 @@ class TestProxyKmipClient(testtools.TestCase):
         """
         client = ProxyKmipClient()
         args = (client, "kmip_version", None)
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             ValueError,
             "KMIP version must be a KMIPVersion enumeration",
             setattr,
diff --git a/kmip/tests/unit/services/test_kmip_client.py b/kmip/tests/unit/services/test_kmip_client.py
index 54f7816..5a4a562 100644
--- a/kmip/tests/unit/services/test_kmip_client.py
+++ b/kmip/tests/unit/services/test_kmip_client.py
@@ -119,7 +119,7 @@ class TestKMIPClient(TestCase):
         """
         client = KMIPProxy()
         args = (client, "kmip_version", None)
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             ValueError,
             "KMIP version must be a KMIPVersion enumeration",
             setattr,