diff --git a/part09-Part09_04.DifferentKindsOfBoxes/pom.xml b/part09-Part09_04.DifferentKindsOfBoxes/pom.xml
index 9aac140..0e1f7e5 100644
--- a/part09-Part09_04.DifferentKindsOfBoxes/pom.xml
+++ b/part09-Part09_04.DifferentKindsOfBoxes/pom.xml
@@ -19,7 +19,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>