diff --git a/backend/Dockerfile b/backend/Dockerfile
index eaed165..4a9df83 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -1,5 +1,5 @@
 # Stage 1: 依赖安装 + 构建
-FROM node:22-alpine AS builder
+FROM node:24-alpine
 
 WORKDIR /app