diff --git a/Code-uid/pom.xml b/Code-uid/pom.xml
index c5e7eb7..56ba8c6 100644
--- a/Code-uid/pom.xml
+++ b/Code-uid/pom.xml
@@ -13,7 +13,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <jdk.version>1.8</jdk.version>
-        <spring.version>4.2.5.RELEASE</spring.version>
+        <spring.version>5.2.20.RELEASE</spring.version>
         <slf4j-version>1.7.7</slf4j-version>
     </properties>