diff --git a/Cargo.toml b/Cargo.toml
index 464ad898c00..c5c78da7d70 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,13 +16,14 @@ build = "build.rs"
 [badges]
 travis-ci = { repository = "PyO3/pyo3", branch = "master" }
 appveyor = { repository = "PyO3/pyo3" }
+codecov = { repository = "PyO3/pyo3", branch = "master", service = "github" }
 
 [dependencies]
 log = "0.3"
 libc = "0.2"
 spin = "0.4.6"
 num-traits = "0.1"
-pyo3cls = { path = "pyo3cls", version = "0.2.0" }
+pyo3cls = { path = "pyo3cls", version = "0.2" }
 
 [build-dependencies]
 regex = "0.2"
diff --git a/README.md b/README.md
index b6c40a63c11..24ecc97f271 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# PyO3 [![Build Status](https://travis-ci.org/PyO3/pyo3.svg?branch=master)](https://travis-ci.org/PyO3/pyo3) [![Build Status](https://ci.appveyor.com/api/projects/status/github/PyO3/pyo3?branch=master&svg=true)](https://ci.appveyor.com/project/fafhrd91/pyo3) [![Join the dev chat](https://img.shields.io/gitter/room/nwjs/nw.js.svg)](https://gitter.im/PyO3/Lobby)
+# PyO3 [![Build Status](https://travis-ci.org/PyO3/pyo3.svg?branch=master)](https://travis-ci.org/PyO3/pyo3) [![Build Status](https://ci.appveyor.com/api/projects/status/github/PyO3/pyo3?branch=master&svg=true)](https://ci.appveyor.com/project/fafhrd91/pyo3) [![codecov](https://codecov.io/gh/PyO3/pyo3/branch/master/graph/badge.svg)](https://codecov.io/gh/PyO3/pyo3) [![Join the dev chat](https://img.shields.io/gitter/room/nwjs/nw.js.svg)](https://gitter.im/PyO3/Lobby)
 
 [Rust](http://www.rust-lang.org/) bindings for the [python](https://www.python.org/) interpreter.