diff --git a/simple-mvc/pom.xml b/simple-mvc/pom.xml
index c1bf851..1fc9aa2 100644
--- a/simple-mvc/pom.xml
+++ b/simple-mvc/pom.xml
@@ -17,7 +17,7 @@
         <!--打包参数-->
         <maven.build.timestamp.format>yyyyMMddHHmmss</maven.build.timestamp.format>
         <!-- spring -->
-        <spring.version>5.2.1.RELEASE</spring.version>
+        <spring.version>5.2.21.RELEASE</spring.version>
         <!--servlet-->
         <servlet.version>3.1.0</servlet.version>
         <servlet.jsp.version>2.0</servlet.jsp.version>