diff --git a/README.Rmd b/README.Rmd
index b9b5f7c..07baa5b 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -23,8 +23,7 @@ knitr::opts_chunk$set(
 <!-- badges: start -->
 
 [![R-CMD-check](https://github.com/ncn-foreigners/nonprobsvy/workflows/R-CMD-check/badge.svg)](https://github.com/ncn-foreigners/nonprobsvy/actions)
-[![Codecov test
-coverage](https://codecov.io/gh/ncn-foreigners/nonprobsvy/branch/main/graph/badge.svg)](https://app.codecov.io/gh/ncn-foreigners/nonprobsvy?branch=main)
+[![codecov](https://codecov.io/gh/ncn-foreigners/nonprobsvy/branch/dev/graph/badge.svg?token=TK9GDFOJF5)](https://codecov.io/gh/ncn-foreigners/nonprobsvy)
 [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.10280114.svg)](https://doi.org/10.5281/zenodo.10280114)
 [![CRAN
 status](https://www.r-pkg.org/badges/version/nonprobsvy)](https://CRAN.R-project.org/package=nonprobsvy)
diff --git a/README.md b/README.md
index 79bd182..35d795b 100644
--- a/README.md
+++ b/README.md
@@ -6,8 +6,7 @@
 <!-- badges: start -->
 
 [![R-CMD-check](https://github.com/ncn-foreigners/nonprobsvy/workflows/R-CMD-check/badge.svg)](https://github.com/ncn-foreigners/nonprobsvy/actions)
-[![Codecov test
-coverage](https://codecov.io/gh/ncn-foreigners/nonprobsvy/branch/main/graph/badge.svg)](https://app.codecov.io/gh/ncn-foreigners/nonprobsvy?branch=main)
+[![codecov](https://codecov.io/gh/ncn-foreigners/nonprobsvy/branch/dev/graph/badge.svg?token=TK9GDFOJF5)](https://codecov.io/gh/ncn-foreigners/nonprobsvy)
 [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.10280114.svg)](https://doi.org/10.5281/zenodo.10280114)
 [![CRAN
 status](https://www.r-pkg.org/badges/version/nonprobsvy)](https://CRAN.R-project.org/package=nonprobsvy)