diff --git a/code_maven/user-service/pom.xml b/code_maven/user-service/pom.xml
index fc8582c..48f2536 100644
--- a/code_maven/user-service/pom.xml
+++ b/code_maven/user-service/pom.xml
@@ -23,7 +23,7 @@
   	<dependency>
   		<groupId>org.springframework</groupId>
   		<artifactId>spring-core</artifactId>
-  		<version>4.1.7.RELEASE</version>
+  		<version>4.3.19.RELEASE</version>
   	</dependency>
   	<dependency>
   		<groupId>org.springframework</groupId>