diff --git a/rock/sandbox/service/sandbox_proxy_service.py b/rock/sandbox/service/sandbox_proxy_service.py
index 49f121d3b..a832780a3 100644
--- a/rock/sandbox/service/sandbox_proxy_service.py
+++ b/rock/sandbox/service/sandbox_proxy_service.py
@@ -422,6 +422,7 @@ async def post_proxy(
         headers: Headers,
     ) -> JSONResponse | StreamingResponse | Response:
         """HTTP POST proxy that supports both streaming (SSE) and non-streaming responses."""
+        await self._update_expire_time(sandbox_id)
 
         EXCLUDED_HEADERS = {"host", "content-length", "transfer-encoding"}