diff --git a/rest_framework_bulk/drf3/serializers.py b/rest_framework_bulk/drf3/serializers.py
index 31fff46..504c88d 100644
--- a/rest_framework_bulk/drf3/serializers.py
+++ b/rest_framework_bulk/drf3/serializers.py
@@ -35,6 +35,34 @@ def to_internal_value(self, data):
 class BulkListSerializer(ListSerializer):
     update_lookup_field = 'id'
 
+    def to_internal_value(self, data):
+        try:
+            return super(BulkListSerializer, self).to_internal_value(data)
+        except AttributeError:
+            pass
+
+        instance_map = {
+            getattr(i, self.update_lookup_field): i for i in self.instance
+        }
+
+        ret = []
+        errors = []
+        for item in data:
+            field = item[self.update_lookup_field]
+            self.child.instance = instance_map.get(field)
+            try:
+                validated = self.child.run_validation(item)
+            except ValidationError as exc:
+                errors.append(exc.detail)
+            else:
+                ret.append(validated)
+                errors.append({})
+
+        if any(errors):
+            raise ValidationError(errors)
+
+        return ret
+
     def update(self, queryset, all_validated_data):
         id_attr = getattr(self.child.Meta, 'update_lookup_field', 'id')
 
diff --git a/rest_framework_bulk/tests/simple_app/models.py b/rest_framework_bulk/tests/simple_app/models.py
index 8c3eafa..243b1c9 100644
--- a/rest_framework_bulk/tests/simple_app/models.py
+++ b/rest_framework_bulk/tests/simple_app/models.py
@@ -5,3 +5,11 @@
 class SimpleModel(models.Model):
     number = models.IntegerField()
     contents = models.CharField(max_length=16)
+
+
+class UniqueTogetherModel(models.Model):
+    foo = models.IntegerField()
+    bar = models.IntegerField()
+
+    class Meta(object):
+        unique_together = ('foo', 'bar')
diff --git a/rest_framework_bulk/tests/simple_app/serializers.py b/rest_framework_bulk/tests/simple_app/serializers.py
index 423083c..c182407 100644
--- a/rest_framework_bulk/tests/simple_app/serializers.py
+++ b/rest_framework_bulk/tests/simple_app/serializers.py
@@ -2,7 +2,7 @@
 from rest_framework.serializers import ModelSerializer
 from rest_framework_bulk.serializers import BulkListSerializer, BulkSerializerMixin
 
-from .models import SimpleModel
+from .models import SimpleModel, UniqueTogetherModel
 
 
 class SimpleSerializer(BulkSerializerMixin,  # only required in DRF3
@@ -11,3 +11,11 @@ class Meta(object):
         model = SimpleModel
         # only required in DRF3
         list_serializer_class = BulkListSerializer
+
+
+class UniqueTogetherSerializer(BulkSerializerMixin,  # only required in DRF3
+                               ModelSerializer):
+    class Meta(object):
+        model = UniqueTogetherModel
+        # only required in DRF3
+        list_serializer_class = BulkListSerializer
diff --git a/rest_framework_bulk/tests/simple_app/urls.py b/rest_framework_bulk/tests/simple_app/urls.py
index f1628d5..6ace076 100644
--- a/rest_framework_bulk/tests/simple_app/urls.py
+++ b/rest_framework_bulk/tests/simple_app/urls.py
@@ -2,11 +2,12 @@
 from django.conf.urls import patterns, url, include
 from rest_framework_bulk.routes import BulkRouter
 
-from .views import SimpleViewSet
+from .views import SimpleViewSet, UniqueTogetherViewSet
 
 
 router = BulkRouter()
 router.register('simple', SimpleViewSet, 'simple')
+router.register('unique-together', UniqueTogetherViewSet, 'unique-together')
 
 urlpatterns = patterns(
     '',
diff --git a/rest_framework_bulk/tests/simple_app/views.py b/rest_framework_bulk/tests/simple_app/views.py
index 7bc16c8..b550f2a 100644
--- a/rest_framework_bulk/tests/simple_app/views.py
+++ b/rest_framework_bulk/tests/simple_app/views.py
@@ -1,8 +1,8 @@
 from __future__ import unicode_literals, print_function
 from rest_framework_bulk import generics
 
-from .models import SimpleModel
-from .serializers import SimpleSerializer
+from .models import SimpleModel, UniqueTogetherModel
+from .serializers import SimpleSerializer, UniqueTogetherSerializer
 
 
 class SimpleMixin(object):
@@ -23,3 +23,9 @@ def filter_queryset(self, queryset):
 class SimpleViewSet(SimpleMixin, generics.BulkModelViewSet):
     def filter_queryset(self, queryset):
         return queryset.filter(number__gt=5)
+
+
+class UniqueTogetherViewSet(generics.BulkModelViewSet):
+    model = UniqueTogetherModel
+    queryset = UniqueTogetherModel.objects.all()
+    serializer_class = UniqueTogetherSerializer
diff --git a/rest_framework_bulk/tests/test_generics.py b/rest_framework_bulk/tests/test_generics.py
index 6838bf4..87dbf3e 100644
--- a/rest_framework_bulk/tests/test_generics.py
+++ b/rest_framework_bulk/tests/test_generics.py
@@ -6,7 +6,7 @@
 from django.test.client import RequestFactory
 from rest_framework import status
 
-from .simple_app.models import SimpleModel
+from .simple_app.models import SimpleModel, UniqueTogetherModel
 from .simple_app.views import FilteredBulkAPIView, SimpleBulkAPIView
 
 
@@ -273,6 +273,25 @@ def test_patch(self):
 
         self.assertEqual(response.status_code, status.HTTP_200_OK)
 
+    def test_patch_unique_together(self):
+        """
+        Test that PATCH with multiple partial resources returns 200
+        even on model with unique together columns
+        """
+        obj1 = UniqueTogetherModel.objects.create(foo=1, bar=2)
+        obj2 = UniqueTogetherModel.objects.create(foo=3, bar=4)
+
+        response = self.client.patch(
+            reverse('api:unique-together-list'),
+            data=json.dumps([
+                {'foo': 5, 'id': obj1.pk},
+                {'foo': 6, 'id': obj2.pk},
+            ]),
+            content_type='application/json',
+        )
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+
     def test_delete(self):
         """
         Test that PATCH with multiple partial resources returns 200
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..8f4a3fc
--- /dev/null
+++ b/tests/__init__.py
@@ -0,0 +1,2 @@
+# -*- coding: utf-8 -*-
+from __future__ import print_function, unicode_literals