diff --git a/ch23-1/demo-consumer/pom.xml b/ch23-1/demo-consumer/pom.xml
index 1793e04c..ce92e842 100644
--- a/ch23-1/demo-consumer/pom.xml
+++ b/ch23-1/demo-consumer/pom.xml
@@ -41,7 +41,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.11</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>