diff --git a/llm_processor.py b/llm_processor.py
index 7558865..586b7d4 100644
--- a/llm_processor.py
+++ b/llm_processor.py
@@ -84,7 +84,7 @@ class LLMProcessor:
             env=None
         )
         
-        self.exit_stack = asyncio.AsyncExitStack()
+        self.exit_stack = contextlib.AsyncExitStack()
         stdio_transport = await self.exit_stack.enter_async_context(stdio_client(server_params))
         stdio, write = stdio_transport
         self.session = await self.exit_stack.enter_async_context(ClientSession(stdio, write))