diff --git a/samples/weather-stdio-server/gradle/libs.versions.toml b/samples/weather-stdio-server/gradle/libs.versions.toml
index 3e99eadae..8dc7993ec 100644
--- a/samples/weather-stdio-server/gradle/libs.versions.toml
+++ b/samples/weather-stdio-server/gradle/libs.versions.toml
@@ -1,6 +1,6 @@
 [versions]
 coroutines = "1.11.0"
-kotlin = "2.3.21"
+kotlin = "2.4.0"
 ktor = "3.3.3"
 logging = "8.0.4"
 mcp-kotlin = "0.13.0"