diff --git a/integrations/weaviate/tests/test_document_store.py b/integrations/weaviate/tests/test_document_store.py
index 8d1be5f5bc..7c7db1159e 100644
--- a/integrations/weaviate/tests/test_document_store.py
+++ b/integrations/weaviate/tests/test_document_store.py
@@ -6,6 +6,7 @@
 import logging
 import os
 from collections.abc import Generator
+from dataclasses import replace
 from unittest.mock import MagicMock, patch
 
 import pytest
@@ -373,7 +374,7 @@ def test_write_documents(self, document_store):
         assert document_store.write_documents([doc]) == 1
         assert document_store.count_documents() == 1
 
-        doc.content = "test doc 2"
+        doc = replace(doc, content="test doc 2")
         assert document_store.write_documents([doc]) == 1
         assert document_store.count_documents() == 1
 
diff --git a/integrations/weaviate/tests/test_document_store_async.py b/integrations/weaviate/tests/test_document_store_async.py
index 62bf334076..7b515d1ed8 100644
--- a/integrations/weaviate/tests/test_document_store_async.py
+++ b/integrations/weaviate/tests/test_document_store_async.py
@@ -4,6 +4,7 @@
 
 import logging
 from collections.abc import AsyncGenerator
+from dataclasses import replace
 from pathlib import Path
 
 import pytest
@@ -100,7 +101,7 @@ async def test_write_documents_async(self, document_store: WeaviateDocumentStore
         assert await document_store.write_documents_async([doc]) == 1
         assert await document_store.count_documents_async() == 1
 
-        doc.content = "test doc 2"
+        doc = replace(doc, content="test doc 2")
         assert await document_store.write_documents_async([doc]) == 1
         assert await document_store.count_documents_async() == 1