diff --git a/samples/server/petstore/kotlin-springboot-springfox/pom.xml b/samples/server/petstore/kotlin-springboot-springfox/pom.xml
index df16e753a7a5..63727788e04d 100644
--- a/samples/server/petstore/kotlin-springboot-springfox/pom.xml
+++ b/samples/server/petstore/kotlin-springboot-springfox/pom.xml
@@ -12,7 +12,7 @@
         <javax-annotation.version>1.3.2</javax-annotation.version>
         <kotlin-test-junit5.version>1.6.21</kotlin-test-junit5.version>
 
-        <kotlin.version>1.6.21</kotlin.version>
+        <kotlin.version>2.1.0</kotlin.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
     <parent>