diff --git a/README.Rmd b/README.Rmd
index 17d9185..119a9bc 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -25,7 +25,7 @@ library(hms)
 [![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/#active)
 [![Lifecycle: maturing](https://img.shields.io/badge/lifecycle-maturing-blue.svg)](https://www.tidyverse.org/lifecycle/#maturing)
 [![R-CMD-check](https://github.com/gipsousp/mctq/workflows/R-CMD-check/badge.svg)](https://github.com/gipsousp/mctq/actions)
-[![Codecov test coverage](https://codecov.io/gh/gipsousp/mctq/branch/master/graph/badge.svg)](https://codecov.io/gh/gipsousp/mctq?branch=master)
+[![Codecov test coverage](https://codecov.io/gh/gipsousp/mctq/branch/main/graph/badge.svg)](https://codecov.io/gh/gipsousp/mctq?branch=main)
 [![License: MIT](https://img.shields.io/badge/license-MIT-green)](https://choosealicense.com/licenses/mit/)
 [![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-v2.0%20adopted-ff69b4.svg)](https://gipsousp.github.io/mctq/CODE_OF_CONDUCT.html)
 <!-- badges: end -->
diff --git a/README.md b/README.md
index 455fadb..c20f03c 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ developed.](https://www.repostatus.org/badges/latest/active.svg)](https://www.re
 maturing](https://img.shields.io/badge/lifecycle-maturing-blue.svg)](https://www.tidyverse.org/lifecycle/#maturing)
 [![R-CMD-check](https://github.com/gipsousp/mctq/workflows/R-CMD-check/badge.svg)](https://github.com/gipsousp/mctq/actions)
 [![Codecov test
-coverage](https://codecov.io/gh/gipsousp/mctq/branch/master/graph/badge.svg)](https://codecov.io/gh/gipsousp/mctq?branch=master)
+coverage](https://codecov.io/gh/gipsousp/mctq/branch/main/graph/badge.svg)](https://codecov.io/gh/gipsousp/mctq?branch=main)
 [![License:
 MIT](https://img.shields.io/badge/license-MIT-green)](https://choosealicense.com/licenses/mit/)
 [![Contributor