diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index d775911..776a757 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -2,10 +2,10 @@ name: CI
 on:
   pull_request:
     branches:
-      - master
+      - main
   push:
     branches:
-      - master
+      - main
     tags: '*'
 jobs:
   test:
diff --git a/README.md b/README.md
index b419f23..1d5ec0c 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # DifferentiableFlatten
 
 [![Actions Status](https://github.com/JuliaNonconvex/DifferentiableFlatten.jl/workflows/CI/badge.svg)](https://github.com/JuliaNonconvex/DifferentiableFlatten.jl/actions)
-[![codecov](https://codecov.io/gh/JuliaNonconvex/DifferentiableFlatten.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/JuliaNonconvex/DifferentiableFlatten.jl)
+[![codecov](https://codecov.io/gh/JuliaNonconvex/DifferentiableFlatten.jl/branch/main/graph/badge.svg)](https://codecov.io/gh/JuliaNonconvex/DifferentiableFlatten.jl)
 
 This package includes an implementation of a `flatten` function which flattens all data structures to vectors and returns an unflattenning function to back to the original data structure. This was originally part of [NonconvexCore.jl](https://github.com/JuliaNonconvex/NonconvexCore.jl).