diff --git a/samples/kotlinlang-mcp-server/gradle/libs.versions.toml b/samples/kotlinlang-mcp-server/gradle/libs.versions.toml
index a113c64..0c11d3b 100644
--- a/samples/kotlinlang-mcp-server/gradle/libs.versions.toml
+++ b/samples/kotlinlang-mcp-server/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-kotlin = "2.4.10"
+kotlin = "2.4.20"
 ktor = "3.5.2"
 mcp-kotlin = "0.15.0"
 serialization = "1.11.0"