diff --git a/pom.xml b/pom.xml
index 429ec31..c8c9305 100644
--- a/pom.xml
+++ b/pom.xml
@@ -14,7 +14,7 @@
     </modules>
 
     <properties>
-        <spring.version>5.1.5.RELEASE</spring.version>
+        <spring.version>5.2.21.RELEASE</spring.version>
         <slf4j.version>1.7.25</slf4j.version>
         <vaadin.version>7.7.16</vaadin.version> <!-- 7.6.2-->
         <vaadin.plugin.version>${vaadin.version}</vaadin.plugin.version>