diff --git a/Chapter 11/parallel-processing/pom.xml b/Chapter 11/parallel-processing/pom.xml
index 369c1f3..751b6a4 100644
--- a/Chapter 11/parallel-processing/pom.xml	
+++ b/Chapter 11/parallel-processing/pom.xml	
@@ -124,7 +124,7 @@
 		<dependency>
 			<groupId>org.apache.activemq</groupId>
 			<artifactId>activemq-core</artifactId>
-			<version>5.4.2</version>
+			<version>5.6.0</version>
             <exclusions>
                 <exclusion>
                     <groupId>org.apache.activemq</groupId>