diff --git a/guestbook/pom.xml b/guestbook/pom.xml
index 30b685d..80fe589 100644
--- a/guestbook/pom.xml
+++ b/guestbook/pom.xml
@@ -87,7 +87,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>3.8.1</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
   </dependencies>