diff --git a/litellm/llms/openai/common_utils.py b/litellm/llms/openai/common_utils.py
index 082764df208..808998ddaf6 100644
--- a/litellm/llms/openai/common_utils.py
+++ b/litellm/llms/openai/common_utils.py
@@ -135,7 +135,7 @@ class BaseOpenAILLM:
         return _cached_client
 
     @staticmethod
-    def owns_wrapped_http_client(http_client: Optional[Union[httpx.Client, httpx.AsyncClient]]) -> bool:
+    def owns_wrapped_http_client(http_client: httpx.Client | httpx.AsyncClient | None) -> bool:
         """Whether litellm may close an SDK client built around ``http_client``.
 
         ``_get_async_http_client`` / ``_get_sync_http_client`` hand back
diff --git a/litellm/llms/openai/openai.py b/litellm/llms/openai/openai.py
index 7096cdbf8fd..f01730a06a5 100644
--- a/litellm/llms/openai/openai.py
+++ b/litellm/llms/openai/openai.py
@@ -366,7 +366,7 @@ class OpenAIChatCompletion(BaseLLM, BaseOpenAILLM):
             if cached_client:
                 if isinstance(cached_client, OpenAI) or isinstance(cached_client, AsyncOpenAI):
                     return cached_client
-            http_client: Optional[Union[httpx.Client, httpx.AsyncClient]] = (
+            http_client: httpx.Client | httpx.AsyncClient | None = (
                 OpenAIChatCompletion._get_async_http_client(shared_session=shared_session)
                 if is_async
                 else OpenAIChatCompletion._get_sync_http_client()