diff --git a/samples/simple-streamable-server/gradle/libs.versions.toml b/samples/simple-streamable-server/gradle/libs.versions.toml
index 77707e09..98c0a188 100644
--- a/samples/simple-streamable-server/gradle/libs.versions.toml
+++ b/samples/simple-streamable-server/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-kotlin = "2.2.21"
+kotlin = "2.3.20"
 ktor = "3.3.3"
 junit = "6.0.3"
 mcp-kotlin = "0.10.0"