diff --git a/2012-03-21-mongodb/pom.xml b/2012-03-21-mongodb/pom.xml
index 26f2ef7..4f41e35 100644
--- a/2012-03-21-mongodb/pom.xml
+++ b/2012-03-21-mongodb/pom.xml
@@ -8,7 +8,7 @@
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<spring.version>3.1.1.RELEASE</spring.version>
+		<spring.version>5.2.22.RELEASE</spring.version>
 		<spring.data.mongo.version>1.0.1.RELEASE</spring.data.mongo.version>
 		<slf4j.version>1.6.1</slf4j.version>
 		<!--<querydsl.version>2.3.2</querydsl.version>-->