diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index f0b39c4..559dcea 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -3,7 +3,7 @@ bouncycastleFips = "2.0.0"
 dependencyLicenseReport = "2.7"
 jackson = "2.21.3"
 kotest = "5.9.1"
-kotlin = "2.0.0"
+kotlin = "2.3.21"
 lombok = "1.18.34"
 mockk = "1.13.12"
 pitest = "1.15.0"