diff --git a/README.md b/README.md
index 3686351dbfb27bc7585a6395f703ef2a4fe8c4dd..6a8c78bd93606ae4a6d5ef69fa140692d063dc86 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 [![Maven Local](https://img.shields.io/maven-metadata/v?metadataUrl=https%3A%2F%2Fgit.ucsc.edu%2Fapi%2Fv4%2Fprojects%2F12162%2Fpackages%2Fmaven%2Fedu%2Fucsc%2Fits%2Ftemerity%2Fmaven-metadata.xml)](https://git.ucsc.edu/wnwalker/temerity/-/packages)
 [![Pipeline](https://git.ucsc.edu/wnwalker/temerity/badges/main/pipeline.svg)](https://git.ucsc.edu/wnwalker/temerity/-/pipelines)
 [![Issues](https://img.shields.io/gitlab/issues/open/wnwalker%2Ftemerity?gitlab_url=https%3A%2F%2Fgit.ucsc.edu)](https://git.ucsc.edu/wnwalker/temerity/-/issues)
-[![Kotlin](https://img.shields.io/badge/kotlin-2.0.20-blue?logo=kotlin)](http://kotlinlang.org)
+[![Kotlin](https://img.shields.io/badge/kotlin-2.0.21-blue?logo=kotlin)](http://kotlinlang.org)
 [![Gradle](https://img.shields.io/badge/Gradle-8-green?style=flat)](https://gradle.org)
 [![License](https://img.shields.io/badge/license-GNU%20LGPL%202.1-blue.svg?style=flat)](https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html)