diff --git a/kotlin/gradle/libs.versions.toml b/kotlin/gradle/libs.versions.toml
index 2e7c8718..29893563 100644
--- a/kotlin/gradle/libs.versions.toml
+++ b/kotlin/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-kotlin = "2.3.20"
+kotlin = "2.3.21"
 ktor = "3.4.3"
 kotlinx-serialization = "1.11.0"
 kotlinx-coroutines = "1.10.2"