diff --git a/whiskers-ktor-no-db/build.gradle.kts b/whiskers-ktor-no-db/build.gradle.kts
index 3c63cf4..8b88d5a 100644
--- a/whiskers-ktor-no-db/build.gradle.kts
+++ b/whiskers-ktor-no-db/build.gradle.kts
@@ -1,7 +1,7 @@
 plugins {
     application
     alias(libs.plugins.kotlin.multiplatform)
-    kotlin("plugin.serialization") version "2.0.20"
+    kotlin("plugin.serialization") version "2.0.21"
 }
 
 group = "org.jesperancinha.native"
diff --git a/whiskers-ktor/build.gradle.kts b/whiskers-ktor/build.gradle.kts
index a4ed34c..05b7ce6 100644
--- a/whiskers-ktor/build.gradle.kts
+++ b/whiskers-ktor/build.gradle.kts
@@ -1,7 +1,7 @@
 plugins {
     application
     alias(libs.plugins.kotlin.multiplatform)
-    kotlin("plugin.serialization") version "2.0.20"
+    kotlin("plugin.serialization") version "2.0.21"
 }
 
 group = "org.jesperancinha.native"