diff --git a/study-rpc/pom.xml b/study-rpc/pom.xml
index 60f0723..e5627cd 100644
--- a/study-rpc/pom.xml
+++ b/study-rpc/pom.xml
@@ -20,7 +20,7 @@
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-core</artifactId>
-            <version>4.1.1.RELEASE</version>
+            <version>4.3.19.RELEASE</version>
         </dependency>
         <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
         <dependency>