diff --git a/spring-mvc-json-pdf-xls-excel/pom.xml b/spring-mvc-json-pdf-xls-excel/pom.xml
index eb5def6..8dc664e 100644
--- a/spring-mvc-json-pdf-xls-excel/pom.xml
+++ b/spring-mvc-json-pdf-xls-excel/pom.xml
@@ -12,7 +12,7 @@
 
 
   <properties>
-		<spring.version>3.1.0.RELEASE</spring.version>
+		<spring.version>5.2.20.RELEASE</spring.version>
 		<junit.version>4.11</junit.version>
 	</properties>