diff --git a/examples/kafka-cluster/build.gradle b/examples/kafka-cluster/build.gradle
index f284af631e5..3679475d1bd 100644
--- a/examples/kafka-cluster/build.gradle
+++ b/examples/kafka-cluster/build.gradle
@@ -11,7 +11,7 @@ dependencies {
     testAnnotationProcessor "org.projectlombok:lombok:1.18.10"
     testImplementation 'org.testcontainers:kafka'
     testImplementation 'org.apache.kafka:kafka-clients:3.0.0'
-    testImplementation 'org.assertj:assertj-core:3.20.2'
+    testImplementation 'org.assertj:assertj-core:3.21.0'
     testImplementation 'com.google.guava:guava:23.0'
     testImplementation 'ch.qos.logback:logback-classic:1.2.6'
 }