diff --git a/README.md b/README.md
index 54dc8ce..273da6c 100644
--- a/README.md
+++ b/README.md
@@ -26,3 +26,5 @@ Please see package vignettes for more details regarding syntax and features.
 [![](https://cranlogs.r-pkg.org/badges/dsem)](https://cran.r-project.org/package=dsem)
 
 [![DOI](https://zenodo.org/badge/656795688.svg)](https://zenodo.org/doi/10.5281/zenodo.10304770)
+
+[![Codecov test coverage](https://codecov.io/gh/James-Thorson-NOAA/dsem/branch/main/graph/badge.svg)](https://app.codecov.io/gh/James-Thorson-NOAA/dsem?branch=main)