diff --git a/README.rst b/README.rst
index 4ca9303..5114ef5 100644
--- a/README.rst
+++ b/README.rst
@@ -3,6 +3,7 @@ spare scores
 
 .. image:: https://codecov.io/gh/CBICA/spare_score/graph/badge.svg?token=7yk7pkydHE
    :target: https://codecov.io/gh/CBICA/spare_score
+   :alt: Codecov
 .. image:: https://github.com/CBICA/spare_score/actions/workflows/macos-tests-3.12.yml/badge.svg
    :alt: macos tests
 .. image:: https://github.com/CBICA/spare_score/actions/workflows/ubuntu-tests-3.12.yml/badge.svg