Update README.md

Author: codereverser

README.md

@@ -3,7 +3,7 @@
 [![code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 [![GitHub](https://img.shields.io/github/license/codereverser/casparser)](https://github.com/codereverser/casparser/blob/main/LICENSE)
 ![GitHub Workflow Status](https://img.shields.io/github/workflow/status/codereverser/casparser/run-tests)
-[![Codecov](https://img.shields.io/codecov/c/github/codereverser/casparser)](https://codecov.io/gh/codereverser/casparser)
+[![codecov](https://codecov.io/gh/codereverser/casparser/branch/main/graph/badge.svg?token=DYZ7TXWRGI)](https://codecov.io/gh/codereverser/casparser)
 ![PyPI - Python Version](https://img.shields.io/pypi/pyversions/casparser)
 
 Parse Consolidated Account Statement (CAS) PDF files generated from CAMS/KFINTECH