diff --git a/litellm/responses/litellm_completion_transformation/streaming_iterator.py b/litellm/responses/litellm_completion_transformation/streaming_iterator.py
index 41aea67924..867c18b6dd 100644
--- a/litellm/responses/litellm_completion_transformation/streaming_iterator.py
+++ b/litellm/responses/litellm_completion_transformation/streaming_iterator.py
@@ -23,9 +23,9 @@ from litellm.types.llms.openai import (
     OutputTextAnnotationAddedEvent,
     OutputTextDeltaEvent,
     OutputTextDoneEvent,
+    ReasoningSummaryPartDoneEvent,
     ReasoningSummaryTextDeltaEvent,
     ReasoningSummaryTextDoneEvent,
-    ReasoningSummaryPartDoneEvent,
     ResponseCompletedEvent,
     ResponseCreatedEvent,
     ResponseInProgressEvent,
@@ -43,6 +43,7 @@ from litellm.types.utils import (
     TextCompletionResponse,
 )
 
+
 class LiteLLMCompletionStreamingIterator(ResponsesAPIStreamingIterator):
     """
     Async iterator for processing streaming responses from the Responses API.