diff --git a/PRGDemo/pom.xml b/PRGDemo/pom.xml
index a95b94c..fc00165 100644
--- a/PRGDemo/pom.xml
+++ b/PRGDemo/pom.xml
@@ -21,7 +21,7 @@
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-webmvc</artifactId>
-            <version>5.1.9.RELEASE</version>
+            <version>5.2.20.RELEASE</version>
         </dependency>
         <dependency>
             <groupId>javax.servlet</groupId>