diff --git a/README.md b/README.md
index 68c2939ec631b5b7d47eedec94ea6bab7b02a3bc..fd828a0ad234cb6b390c6c9eabd672687c6c35ca 100644
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 [![Build Status](https://travis-ci.org/LLNL/spack.svg?branch=develop)](https://travis-ci.org/LLNL/spack)
 [![codecov](https://codecov.io/gh/LLNL/spack/branch/develop/graph/badge.svg)](https://codecov.io/gh/LLNL/spack)
+[![Read the Docs](https://readthedocs.org/projects/spack/badge/?version=latest)](https://spack.readthedocs.io)
 
 Spack is a package management tool designed to support multiple
 versions and configurations of software on a wide variety of platforms