diff --git a/code/java/ch12/kafka-ml-project/projects/dl4j.mlp/pom.xml b/code/java/ch12/kafka-ml-project/projects/dl4j.mlp/pom.xml
index 8f4b2c3..14100fe 100644
--- a/code/java/ch12/kafka-ml-project/projects/dl4j.mlp/pom.xml
+++ b/code/java/ch12/kafka-ml-project/projects/dl4j.mlp/pom.xml
@@ -37,7 +37,7 @@
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
             <artifactId>httpclient</artifactId>
-            <version>4.3.6</version>
+            <version>4.5.13</version>
         </dependency>
 
         <!-- logging -->