diff --git a/appengine/ktor/build.gradle.kts b/appengine/ktor/build.gradle.kts
index 375e6db6..de65d44e 100644
--- a/appengine/ktor/build.gradle.kts
+++ b/appengine/ktor/build.gradle.kts
@@ -1,5 +1,5 @@
 plugins {
-    kotlin("jvm") version "1.9.23"
+    kotlin("jvm") version "2.1.10"
     war
     id("com.google.cloud.tools.appengine") version "2.4.5"
 }