diff --git a/dj_cqrs/mixins.py b/dj_cqrs/mixins.py
index e58e5c5..2fc564f 100644
--- a/dj_cqrs/mixins.py
+++ b/dj_cqrs/mixins.py
@@ -13,7 +13,7 @@
 
 from django.conf import settings
 from django.db import router, transaction
-from django.db.models import DateField, DateTimeField, F, IntegerField, Manager, Model
+from django.db.models import DateField, DateTimeField, F, IntegerField, Manager, Model, UUIDField
 from django.db.models.expressions import CombinedExpression
 from django.utils.module_loading import import_string
 
@@ -261,7 +261,7 @@ def _common_serialization(self, using):
                 continue
 
             value = f.value_from_object(self)
-            if value is not None and isinstance(f, (DateField, DateTimeField)):
+            if value is not None and isinstance(f, (DateField, DateTimeField, UUIDField)):
                 value = str(value)
 
             data[f.name] = value
diff --git a/tests/test_master/test_mixin.py b/tests/test_master/test_mixin.py
index a6d241e..82eea96 100644
--- a/tests/test_master/test_mixin.py
+++ b/tests/test_master/test_mixin.py
@@ -143,7 +143,7 @@ def test_to_cqrs_dict_basic_types():
         'datetime_field': str(dt),
         'float_field': 1.23,
         'url_field': 'http://example.com',
-        'uuid_field': uid,
+        'uuid_field': str(uid),
     }, m.to_cqrs_dict())