diff --git a/setup.py b/setup.py
index 5c5f1f5..498ef40 100755
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@ def get_version(cwd, **kwargs):
         'cbor2==3.0.4',
         'coincurve>=7.1.0',
         'ethereum==1.6.1',
-        'pyelliptic==1.5.9',
+        'pyelliptic==1.5.10',
         'pytz',
         'semantic_version',
     ],
diff --git a/tests/test_basic.py b/tests/test_basic.py
index 794191e..958c2e9 100644
--- a/tests/test_basic.py
+++ b/tests/test_basic.py
@@ -118,7 +118,7 @@ def test_hello_version(self, v_mock):
         msg = message.Hello()
         self.assertEqual(msg._version, v_mock)
 
-        msg = message.Hello(deserialized=True)
+        msg = message.Hello(deserialized=True, header=message.Hello().header)
         self.assertFalse(hasattr(msg, '_version'))
 
         version_kwarg = object()