diff --git a/part2.3-message-broker/build.gradle b/part2.3-message-broker/build.gradle
index ff60735..4f5c7a8 100644
--- a/part2.3-message-broker/build.gradle
+++ b/part2.3-message-broker/build.gradle
@@ -26,7 +26,7 @@ dependencies {
     testRuntimeOnly("org.junit.platform:junit-platform-launcher")
     testImplementation project(':commons')
     testImplementation project(':commons-rest')
-    testImplementation 'pl.allegro.tech.hermes:hermes-mock:2.5.1'
+    testImplementation 'pl.allegro.tech.hermes:hermes-mock:2.5.2'
     testImplementation 'org.spockframework:spock-junit4:2.4-M1-groovy-4.0'
     testImplementation 'org.spockframework:spock-spring:2.4-M1-groovy-4.0'
 }