diff --git a/part09-Part09_02.PersonAndSubclasses/pom.xml b/part09-Part09_02.PersonAndSubclasses/pom.xml
index edac1d2..93d11c1 100644
--- a/part09-Part09_02.PersonAndSubclasses/pom.xml
+++ b/part09-Part09_02.PersonAndSubclasses/pom.xml
@@ -20,7 +20,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>