diff --git a/litellm/llms/azure.py b/litellm/llms/azure.py
index 01b54987b2..6a0c1ec1fb 100644
--- a/litellm/llms/azure.py
+++ b/litellm/llms/azure.py
@@ -333,10 +333,17 @@ class AzureChatCompletion(BaseLLM):
                 azure_client_params["api_key"] = api_key
             elif azure_ad_token is not None:
                 azure_client_params["azure_ad_token"] = azure_ad_token
+
+            # setting Azure client
             if client is None:
                 azure_client = AsyncAzureOpenAI(**azure_client_params)
             else:
                 azure_client = client
+                if api_version is not None and isinstance(
+                    azure_client._custom_query, dict
+                ):
+                    # set api_version to version passed by user
+                    azure_client._custom_query.setdefault("api-version", api_version)
             ## LOGGING
             logging_obj.pre_call(
                 input=data["messages"],