diff --git a/hyperloglog-server/pom.xml b/hyperloglog-server/pom.xml
index 4deedc73..36221634 100644
--- a/hyperloglog-server/pom.xml
+++ b/hyperloglog-server/pom.xml
@@ -44,7 +44,7 @@
 	</distributionManagement>
 			
 	<properties>
-		<spring.version>3.0.5.RELEASE</spring.version>
+		<spring.version>5.2.20.RELEASE</spring.version>
 		<struts2.version>2.1.8.1</struts2.version>
 
 		<jetty.version>6.1.24</jetty.version>