diff --git a/notification-portlet-webapp/build.gradle b/notification-portlet-webapp/build.gradle
index 568570b6..d7b95552 100644
--- a/notification-portlet-webapp/build.gradle
+++ b/notification-portlet-webapp/build.gradle
@@ -1,6 +1,6 @@
 buildscript {
     ext {
-        springBootVersion = '1.5.22.RELEASE'
+        springBootVersion = '4.0.3'
     }
     repositories {
         mavenCentral()