diff --git a/Dockerfile b/Dockerfile
index 89793a0..405bf5b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,6 @@
 # 多段构建 - 第一阶段：构建应用
-FROM node:16-alpine AS builder
+# pnpm-lock.yaml 为 lockfileVersion 9，需要 pnpm v9（要求 Node >= 18）
+FROM node:18-alpine AS builder
 
 WORKDIR /app
 
@@ -18,7 +19,7 @@ RUN if [ -n "$NPM_REGISTRY" ]; then npm config set registry "$NPM_REGISTRY"; fi
 
 RUN set -eux; \
   if [ "$PKG_MANAGER" = "pnpm" ]; then \
-    npm i -g pnpm@8 && pnpm i --frozen-lockfile; \
+    npm i -g pnpm@9 && pnpm i --frozen-lockfile; \
   elif [ "$PKG_MANAGER" = "npm" ]; then \
     npm ci --no-audit --fund=false; \
   else \