diff --git a/README.md b/README.md
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--- a/README.md
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@@ -1,6 +1,6 @@
 # mbtiles
 
-Node.js utilities and [tilelive](https://github.com/mapbox/tilelive.js) integration for the [MBTiles](http://mbtiles.org) format.
+Node.js utilities and [tilelive](https://github.com/mapbox/tilelive.js) integration for the [MBTiles](https://github.com/mapbox/mbtiles-spec) format.
 
 [![Build Status](https://travis-ci.org/mapbox/node-mbtiles.svg?branch=master)](https://travis-ci.org/mapbox/node-mbtiles)
 [![Build status](https://ci.appveyor.com/api/projects/status/04wbok5rs3eroffe)](https://ci.appveyor.com/project/Mapbox/node-mbtiles)