diff --git a/lib/package-server.js b/lib/package-server.js
index 8155e73..3aa760b 100644
--- a/lib/package-server.js
+++ b/lib/package-server.js
@@ -98,8 +98,9 @@ function loadPages(pkgConf, route, req, res, next) {
 
         //console.log('[static mount]', pkgpath);
         // https://github.com/expressjs/serve-static/issues/54
+        // https://github.com/pillarjs/send/issues/91
         // https://example.com/.well-known/acme-challenge/xxxxxxxxxxxxxxx
-        staticServer = require('serve-static')(pkgpath, { dotfiles: 'allow' });
+        staticServer = require('serve-static')(pkgpath, { dotfiles: undefined });
         resolve(staticServer);
       });
     });