diff --git a/sample-operators/kotlin-operator/pom.xml b/sample-operators/kotlin-operator/pom.xml
index c23edaa30c..021dafbcce 100644
--- a/sample-operators/kotlin-operator/pom.xml
+++ b/sample-operators/kotlin-operator/pom.xml
@@ -33,7 +33,7 @@
     Kotlin</description>
 
   <properties>
-    <kotlin.version>2.4.20</kotlin.version>
+    <kotlin.version>2.4.21</kotlin.version>
   </properties>
 
   <dependencyManagement>