diff --git a/GuavaBook/pom.xml b/GuavaBook/pom.xml
index 3a3d012..075678d 100644
--- a/GuavaBook/pom.xml
+++ b/GuavaBook/pom.xml
@@ -51,7 +51,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.11</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>