diff --git a/README.md b/README.md
index cd3a335..edc4c4d 100644
--- a/README.md
+++ b/README.md
@@ -3,4 +3,4 @@
 [![Stable](https://img.shields.io/badge/docs-stable-blue.svg)](https://chriselrod.github.io/ManualMemory.jl/stable)
 [![Dev](https://img.shields.io/badge/docs-dev-blue.svg)](https://chriselrod.github.io/ManualMemory.jl/dev)
 [![Build Status](https://github.com/chriselrod/ManualMemory.jl/workflows/CI/badge.svg)](https://github.com/chriselrod/ManualMemory.jl/actions)
-[![Coverage](https://codecov.io/gh/chriselrod/ManualMemory.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/chriselrod/ManualMemory.jl)
+[![Coverage](https://codecov.io/gh/chriselrod/ManualMemory.jl/branch/main/graph/badge.svg)](https://codecov.io/gh/chriselrod/ManualMemory.jl)