diff --git a/myspringBook/pom.xml b/myspringBook/pom.xml
index 89ee2d27..19397981 100644
--- a/myspringBook/pom.xml
+++ b/myspringBook/pom.xml
@@ -50,7 +50,7 @@
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-expression</artifactId>
-            <version>5.1.5.RELEASE</version>
+            <version>5.2.21.RELEASE</version>
         </dependency>
         <!--spring junit-->
         <dependency>