diff --git a/litellm/llms/dashscope/chat/transformation.py b/litellm/llms/dashscope/chat/transformation.py
index 977bb38f59a..04d530ea89b 100644
--- a/litellm/llms/dashscope/chat/transformation.py
+++ b/litellm/llms/dashscope/chat/transformation.py
@@ -12,7 +12,7 @@ from ...openai.chat.gpt_transformation import OpenAIGPTConfig
 
 
 class DashScopeChatConfig(OpenAIGPTConfig):
-    def get_supported_openai_params(self, model: str) -> list:  # mutable-ok: base class contract returns a list
+    def get_supported_openai_params(self, model: str) -> list[str]:  # mutable-ok: base class contract returns a list
         return [  # mutable-ok: base class contract returns a list
             *super().get_supported_openai_params(model=model),
             "reasoning_effort",