Update README.md

README.md

@@ -1,7 +1,7 @@
 <img src="docs/source/art/pyuoi.png" alt="PyUoI logo" width="200px">
 
 [![Actions Status](https://github.com/BouchardLab/pyuoi/workflows/pyuoi_tests/badge.svg)](https://github.com/BouchardLab/pyuoi/actions)
-[![codecov](https://codecov.io/gh/BouchardLab/PyUoI/branch/master/graph/badge.svg)](https://codecov.io/gh/BouchardLab/PyUoI)
+[![codecov](https://codecov.io/gh/BouchardLab/pyuoi/branch/main/graph/badge.svg?token=DxEQxVEam8)](https://codecov.io/gh/BouchardLab/pyuoi)
 [![Documentation Status](https://readthedocs.org/projects/pyuoi/badge/?version=latest)](https://pyuoi.readthedocs.io/en/latest/?badge=latest)
 ![PyPI](https://img.shields.io/pypi/v/pyuoi)
 [![Anaconda-Server Badge](https://anaconda.org/conda-forge/pyuoi/badges/installer/conda.svg)](https://conda.anaconda.org/conda-forge)