diff --git a/litellm/proxy/common_request_processing.py b/litellm/proxy/common_request_processing.py
index a4d5c6d561c..4d9c177f508 100644
--- a/litellm/proxy/common_request_processing.py
+++ b/litellm/proxy/common_request_processing.py
@@ -629,7 +629,7 @@ class ProxyBaseLLMRequestProcessing:
         logging_obj: LiteLLMLoggingObj,
         version: Optional[str],
         proxy_logging_obj: ProxyLogging,
-    ) -> dict[str, str]:
+    ) -> Dict[str, str]:
         """
         Build LiteLLM proxy response headers for routes that call the LLM directly
         (e.g. Google native :generateContent) instead of base_process_llm_request.