diff --git a/tracing-axon-example/pom.xml b/tracing-axon-example/pom.xml
index 72db027..c74207c 100644
--- a/tracing-axon-example/pom.xml
+++ b/tracing-axon-example/pom.xml
@@ -31,7 +31,7 @@
 
     <properties>
         <opentracing.version>3.3.1</opentracing.version>
-        <kotlin.version>1.8.20</kotlin.version>
+        <kotlin.version>1.9.21</kotlin.version>
         <kotlin-logging-jvm.version>3.0.5</kotlin-logging-jvm.version>
     </properties>