diff --git a/packages/vite/src/node/server/middlewares/proxy.ts b/packages/vite/src/node/server/middlewares/proxy.ts
index d414e24d462efd..de72cfeb638e14 100644
--- a/packages/vite/src/node/server/middlewares/proxy.ts
+++ b/packages/vite/src/node/server/middlewares/proxy.ts
@@ -40,7 +40,7 @@ export function proxyMiddleware({
   Object.keys(options).forEach((context) => {
     let opts = options[context]
     if (typeof opts === 'string') {
-      opts = { target: opts } as ProxyOptions
+      opts = { target: opts, changeOrigin: true } as ProxyOptions
     }
     const proxy = httpProxy.createProxyServer(opts) as HttpProxy.Server