diff --git a/README.md b/README.md
index 9d3c1e5..9504fb0 100644
--- a/README.md
+++ b/README.md
@@ -117,7 +117,7 @@ are created by/copyright of [FAMFAMFAM](http://www.famfamfam.com/).
 [travis-url]: https://travis-ci.org/expressjs/serve-index
 [coveralls-image]: https://img.shields.io/coveralls/expressjs/serve-index.svg?style=flat
 [coveralls-url]: https://coveralls.io/r/expressjs/serve-index?branch=master
-[downloads-image]: http://img.shields.io/npm/dm/serve-index.svg?style=flat
+[downloads-image]: https://img.shields.io/npm/dm/serve-index.svg?style=flat
 [downloads-url]: https://npmjs.org/package/serve-index
 [gittip-image]: https://img.shields.io/gittip/dougwilson.svg?style=flat
 [gittip-url]: https://www.gittip.com/dougwilson/