diff --git a/Dockerfile b/Dockerfile
index d91b215..1438407 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,6 +9,7 @@ RUN npm run build
 # ---- 后端构建 ----
 FROM golang:1.24-alpine AS go-builder
 ENV GOPROXY=https://goproxy.cn,direct
+ENV GOTOOLCHAIN=auto
 WORKDIR /app/server
 COPY server/go.mod server/go.sum ./
 RUN go mod download