diff --git a/tests/factories.py b/tests/factories.py
index f18e2332..274ed171 100644
--- a/tests/factories.py
+++ b/tests/factories.py
@@ -381,7 +381,7 @@ class AttachmentFactory(Base):
         model = Attachment
 
     filename = factory.Faker("domain_word")
-    object_name = factory.Faker("domain_word")
+    object_name = factory.LazyFunction(lambda *args: uuid4().hex)
 
 
 class TaskOrderFactory(Base):