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README.md

@@ -2,7 +2,7 @@
 
 [![Crate version](https://img.shields.io/crates/v/bfc)](https://crates.io/crates/bfc)
 [![docs](https://docs.rs/bfc/badge.svg)](https://docs.rs/crate/bfc/)
-[![Coverage Status](https://coveralls.io/repos/Wilfred/bfc/badge.svg?branch=master&service=github)](https://coveralls.io/github/Wilfred/bfc?branch=master)
+[![codecov](https://codecov.io/gh/Wilfred/bfc/branch/master/graph/badge.svg?token=LXpqhjCjVZ)](https://codecov.io/gh/Wilfred/bfc)
 
 bfc is an industrial grade compiler for
 [brainfuck](https://en.wikipedia.org/wiki/Brainfuck). It can: