diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 208b2e8..98b17a9 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -13,7 +13,7 @@ kfsm = "0.12.0"
 kotest = "5.9.1"
 kotestArrow = "2.0.0"
 # @pin
-kotlin = "2.3.0"
+kotlin = "2.2.21"
 kotlinBinaryCompatibilityPlugin = "0.18.1"
 kotlinLogging = "7.0.13"
 mavenPublish = "0.35.0"