diff --git a/README.md b/README.md
index 8b4a758..2190cdb 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-![kotlin-version](https://img.shields.io/badge/kotlin-2.0.20-blue?logo=kotlin)
+![kotlin-version](https://img.shields.io/badge/kotlin-2.0.21-blue?logo=kotlin)
 [![Build](https://github.com/fethij/Rijksmuseum/actions/workflows/deploy.yaml/badge.svg)](https://github.com/fethij/Rijksmuseum/actions/workflows/deploy.yaml)
 
 ![badge-android](http://img.shields.io/badge/platform-android-6EDB8D.svg?style=flat)