diff --git a/demo-server/pom.xml b/demo-server/pom.xml
index ea3d4b7..6df8f66 100644
--- a/demo-server/pom.xml
+++ b/demo-server/pom.xml
@@ -64,7 +64,7 @@
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-core</artifactId>
-      <version>5.1.2.RELEASE</version>
+      <version>5.3.18</version>
       <scope>compile</scope>
     </dependency>
     <dependency>