diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index dd1035e5..5532cd68 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -11,7 +11,7 @@ java = "17"
 junitJupiter = "5.11.2"
 kluent = "1.73"
 kotest = "5.9.1"
-kotlin = "2.0.20"
+kotlin = "2.0.21"
 # See https://github.com/detekt/detekt/issues/6198
 detektKotlinVersion = "1.9.22"
 mockk = "1.13.13"