diff --git a/README.md b/README.md
index 9d71aee95..ed62af2c3 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 [![Travis-CI](https://travis-ci.com/CICE-Consortium/Icepack.svg?branch=master)](https://travis-ci.com/CICE-Consortium/Icepack)
 [![GHActions](https://github.com/CICE-Consortium/Icepack/workflows/GHActions/badge.svg)](https://github.com/CICE-Consortium/Icepack/actions)
-[![Documentation Status](https://readthedocs.org/projects/cice-consortium-icepack/badge/?version=master)](http://cice-consortium-icepack.readthedocs.io/en/master/?badge=master)
+[![Documentation Status](https://readthedocs.org/projects/cice-consortium-icepack/badge/?version=main)](http://cice-consortium-icepack.readthedocs.io/en/main/?badge=master)
 [![lcov](https://img.shields.io/endpoint?url=https://apcraig.github.io/coverage_icepack.json)](https://apcraig.github.io)
 
 <!--- [![codecov](https://codecov.io/gh/CICE-Consortium/Icepack/branch/master/graph/badge.svg)](https://codecov.io/gh/CICE-Consortium/Icepack) --->