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README.md

@@ -6,7 +6,7 @@
 
 
 [![Build Status](https://img.shields.io/github/workflow/status/trailofbits/manticore/CI/master)](https://github.com/trailofbits/manticore/actions?query=workflow%3ACI)
-[![Codecov](https://img.shields.io/codecov/c/github/trailofbits/manticore)](https://codecov.io/github/trailofbits/manticore)
+[![Coverage Status](https://coveralls.io/repos/github/trailofbits/manticore/badge.svg)](https://coveralls.io/github/trailofbits/manticore)
 [![PyPI Version](https://badge.fury.io/py/manticore.svg)](https://badge.fury.io/py/manticore)
 [![Slack Status](https://empireslacking.herokuapp.com/badge.svg)](https://empireslacking.herokuapp.com)
 [![Documentation Status](https://readthedocs.org/projects/manticore/badge/?version=latest)](http://manticore.readthedocs.io/en/latest/?badge=latest)