diff --git a/models/index_model.py b/models/index_model.py
index 17317ec2..4bb2440a 100644
--- a/models/index_model.py
+++ b/models/index_model.py
@@ -904,7 +904,7 @@ async def set_link_index_recurse(
 
     def get_query_engine(self, index, message, summary):
         retriever = VectorIndexRetriever(
-            index=index, similarity_top_k=2, service_context=service_context
+            index=index, similarity_top_k=6, service_context=service_context
         )
 
         response_synthesizer = get_response_synthesizer(