diff --git a/spring-boot-2-demo-app/build.gradle.kts b/spring-boot-2-demo-app/build.gradle.kts
index d98dbdf1..7bcaac08 100644
--- a/spring-boot-2-demo-app/build.gradle.kts
+++ b/spring-boot-2-demo-app/build.gradle.kts
@@ -2,7 +2,7 @@ plugins {
     id("sb-ot-demo.java-conventions")
     id("sb-ot-demo.forbidden-apis")
     id("sb-ot-demo.docker")
-    id("org.springframework.boot") version "2.7.18"
+    id("org.springframework.boot") version "3.4.2"
     id("io.freefair.lombok")
 }