diff --git a/README.md b/README.md
index 73c14c0e..8daa3b5f 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# `mdopt` — Discrete Optimization in the MPS-MPO Language
+# `mdopt` — Discrete Optimisation in the MPS-MPO Language
 
 [![codecov](https://codecov.io/gh/quicophy/mdopt/branch/main/graph/badge.svg?token=4G7VWYX0S2)](https://codecov.io/gh/quicophy/mdopt)
 [![tests](https://github.com/quicophy/mdopt/actions/workflows/tests.yml/badge.svg?branch=main)](https://github.com/quicophy/mdopt/actions/workflows/tests.yml)