diff --git a/src/server.py b/src/server.py
index 98a7476..6dce236 100644
--- a/src/server.py
+++ b/src/server.py
@@ -581,7 +581,7 @@ def main():
     )
 
     # Build ASGI app (FastMCP exposes to_asgi_app in current SDKs)
-    app = mcp.to_asgi_app()
+    app = mcp.streamable_http_app()
 
     # Apply API key auth if configured
     if api_key: