diff --git a/src/agents/mcp/server.py b/src/agents/mcp/server.py
index e70d7ce6..1c01f175 100644
--- a/src/agents/mcp/server.py
+++ b/src/agents/mcp/server.py
@@ -4,7 +4,7 @@
 import asyncio
 from contextlib import AbstractAsyncContextManager, AsyncExitStack
 from pathlib import Path
-from typing import Any, Literal
+from typing import Any, Literal, Self
 
 from anyio.streams.memory import MemoryObjectReceiveStream, MemoryObjectSendStream
 from mcp import ClientSession, StdioServerParameters, Tool as MCPTool, stdio_client
@@ -34,7 +34,7 @@ def name(self) -> str:
         pass
 
     @abc.abstractmethod
-    async def cleanup(self):
+    async def cleanup(self) -> Self:
         """Cleanup the server. For example, this might mean closing a subprocess or
         closing a network connection.
         """