diff --git a/octodns/provider/dyn.py b/octodns/provider/dyn.py
index c306238..30ba8bd 100644
--- a/octodns/provider/dyn.py
+++ b/octodns/provider/dyn.py
@@ -903,10 +903,10 @@ class DynProvider(BaseProvider):
         # Sort the values for consistent ordering so that we can compare
         values = sorted(values, key=_dynamic_value_sort_key)
         # Ensure that weight is included and if not use the default
-        values = map(lambda v: {
+        values = list(map(lambda v: {
             'value': v['value'],
             'weight': v.get('weight', 1),
-        }, values)
+        }, values))
 
         # Walk through our existing pools looking for a match we can use
         for pool in pools:
diff --git a/tests/test_octodns_provider_dyn.py b/tests/test_octodns_provider_dyn.py
index 4f224fc..7c023fd 100644
--- a/tests/test_octodns_provider_dyn.py
+++ b/tests/test_octodns_provider_dyn.py
@@ -670,8 +670,8 @@ class TestDynProviderGeo(TestCase):
         tds = provider.traffic_directors
         self.assertEquals(set(['unit.tests.', 'geo.unit.tests.']),
                           set(tds.keys()))
-        self.assertEquals(['A'], tds['unit.tests.'].keys())
-        self.assertEquals(['A'], tds['geo.unit.tests.'].keys())
+        self.assertEquals(['A'], list(tds['unit.tests.'].keys()))
+        self.assertEquals(['A'], list(tds['geo.unit.tests.'].keys()))
         provider.log.warn.assert_called_with("Unsupported TrafficDirector "
                                              "'%s'", 'something else')