diff --git a/HelloServlet/pom.xml b/HelloServlet/pom.xml
index ec4b20d..aeb280a 100644
--- a/HelloServlet/pom.xml
+++ b/HelloServlet/pom.xml
@@ -23,7 +23,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.11</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
     <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->