diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 7579834..4edfbc7 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -16,7 +16,7 @@ opentest4j = "1.3.0"
 
 # plugins
 dokka = "1.9.20"
-kotlin = "2.3.0"
+kotlin = "2.3.21"
 ##  ⬆ = "2.3.10-RC"
 ##  ⬆ = "2.3.20-Beta1"
 changelog = "2.5.0"