diff --git a/pinax/api/resource.py b/pinax/api/resource.py
index 3375303..c17d340 100644
--- a/pinax/api/resource.py
+++ b/pinax/api/resource.py
@@ -298,8 +298,10 @@ def resolve_include(resource, path, included):
 def resolve_value(value):
     if callable(value):
         value = resolve_value(value())
-    if isinstance(value, datetime.datetime):
-        return rfc3339.encode(value)
-    if hasattr(value, "as_json"):
+    elif isinstance(value, datetime.datetime):
+        value = rfc3339.encode(value)
+    elif isinstance(value, datetime.date):
+        value = datetime.date.isoformat(value)
+    elif hasattr(value, "as_json"):
         value = value.as_json()
     return value
diff --git a/pinax/api/tests/test_resources.py b/pinax/api/tests/test_resources.py
index 711d954..4e10919 100644
--- a/pinax/api/tests/test_resources.py
+++ b/pinax/api/tests/test_resources.py
@@ -1,5 +1,6 @@
 import json
-import mock
+from datetime import date, datetime
+from mock import NonCallableMock, patch, sentinel
 
 from django.contrib.auth.models import AnonymousUser
 from django.core.urlresolvers import reverse
@@ -20,7 +21,7 @@ def test_get_empty_collection(self):
         """
         collection_url = reverse("article-list")
 
-        with mock.patch("pinax.api.authentication.Anonymous.authenticate", autospec=True) as mock_authenticate:
+        with patch("pinax.api.authentication.Anonymous.authenticate", autospec=True) as mock_authenticate:
             mock_authenticate.return_value = AnonymousUser()
             response = self.client.get(collection_url)
             payload = json.loads(response.content.decode("utf-8"))
@@ -57,7 +58,7 @@ def test_get_collection(self):
             kwargs=dict(pk=article.pk)
         )
 
-        with mock.patch("pinax.api.authentication.Anonymous.authenticate", autospec=True) as mock_authenticate:
+        with patch("pinax.api.authentication.Anonymous.authenticate", autospec=True) as mock_authenticate:
             mock_authenticate.return_value = AnonymousUser()
             response = self.client.get(collection_url)
             payload = json.loads(response.content.decode("utf-8"))
@@ -126,7 +127,7 @@ def test_get_article(self):
             kwargs=dict(pk=article.pk)
         )
 
-        with mock.patch("pinax.api.authentication.Anonymous.authenticate", autospec=True) as mock_authenticate:
+        with patch("pinax.api.authentication.Anonymous.authenticate", autospec=True) as mock_authenticate:
             mock_authenticate.return_value = AnonymousUser()
             response = self.client.get(detail_url)
             payload = json.loads(response.content.decode("utf-8"))
@@ -184,7 +185,7 @@ def test_create(self):
                 }
             }
         }
-        with mock.patch("pinax.api.authentication.Anonymous.authenticate", autospec=True) as mock_authenticate:
+        with patch("pinax.api.authentication.Anonymous.authenticate", autospec=True) as mock_authenticate:
             mock_authenticate.return_value = AnonymousUser()
             collection_url = reverse("article-list")
             response = self.client.post(
@@ -235,3 +236,26 @@ def test_create(self):
                 }
             }
             self.assertEqual(expected, payload)
+
+
+class ResolveValueTestCase(api.TestCase):
+
+    def test_should_call_callables(self):
+        result = api.resource.resolve_value(lambda: sentinel.callable_result)
+        self.assertEqual(result, sentinel.callable_result)
+
+    def test_should_coerce_datetime(self):
+        datetime_ = datetime.now()
+        result = api.resource.resolve_value(datetime_)
+        self.assertEqual(result, api.rfc3339.encode(datetime_))
+
+    def test_should_coerce_date(self):
+        date_ = date.today()
+        result = api.resource.resolve_value(date_)
+        self.assertEqual(result, date.isoformat(date_))
+
+    def test_should_return_as_json(self):
+        with_as_json = NonCallableMock()
+        with_as_json.as_json.return_value = sentinel.as_json
+        result = api.resource.resolve_value(with_as_json)
+        self.assertEqual(result, sentinel.as_json)