diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index db113e2..031f998 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,7 +1,7 @@
 [versions]
 junitJupiter = "5.13.4"
 junitPlatform = "1.13.4"
-kotlin = "2.3.20"
+kotlin = "2.3.21"
 kotlinVersionrange = "[1.6,3)"
 logback = "1.3.16"
 logbackVersionrange = "[1.2,2)"