diff --git a/ktor-app/build.gradle.kts b/ktor-app/build.gradle.kts
index c7170f0..9a4a2a7 100644
--- a/ktor-app/build.gradle.kts
+++ b/ktor-app/build.gradle.kts
@@ -4,9 +4,9 @@ val logback_version: String by project
 val postgres_version: String by project
 
 plugins {
-  kotlin("jvm") version "1.9.20"
+  kotlin("jvm") version "1.9.21"
   id("io.ktor.plugin") version "2.3.6"
-  id("org.jetbrains.kotlin.plugin.serialization") version "1.9.20"
+  id("org.jetbrains.kotlin.plugin.serialization") version "1.9.21"
 }
 
 group = "org.rogervinas"