diff --git a/packages/slidev/node/cli.ts b/packages/slidev/node/cli.ts
index 0010a15818..6478fc1010 100644
--- a/packages/slidev/node/cli.ts
+++ b/packages/slidev/node/cli.ts
@@ -151,6 +151,8 @@ cli.command(
             host,
             // @ts-expect-error Vite <= 4
             force,
+            // Allow Cloudflare Quick Tunnel domains when tunneling is enabled
+            ...(tunnel && remote != null ? { allowedHosts: ['.trycloudflare.com'] } : {}),
           },
           optimizeDeps: {
             // Vite 5