diff --git a/backend/Dockerfile b/backend/Dockerfile
index 0228e09..ca3f7d5 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -5,6 +5,7 @@ WORKDIR /app
 RUN apk add --no-cache git nodejs npm
 
 ENV GOPROXY=https://goproxy.cn,direct
+ENV GOTOOLCHAIN=auto
 
 COPY backend/go.mod backend/go.sum ./
 RUN go mod download