diff --git a/litellm/types/llms/openai.py b/litellm/types/llms/openai.py
index a6115640d78..dbc40a9ba92 100644
--- a/litellm/types/llms/openai.py
+++ b/litellm/types/llms/openai.py
@@ -627,7 +627,7 @@ class ChatCompletionReasoningItem(TypedDict, total=False):
     type: Required[Literal["reasoning"]]
     id: str
     encrypted_content: str | None
-    summary: list["ChatCompletionReasoningSummaryTextBlock"]
+    summary: list[ChatCompletionReasoningSummaryTextBlock]
 
 
 class WebSearchOptionsUserLocationApproximate(TypedDict, total=False):