diff --git a/sample-gradle-multi/modules/zulu/build.gradle b/sample-gradle-multi/modules/zulu/build.gradle
index bd79e8b..45e1422 100644
--- a/sample-gradle-multi/modules/zulu/build.gradle
+++ b/sample-gradle-multi/modules/zulu/build.gradle
@@ -1,6 +1,6 @@
 plugins {
     id 'jig.java-conventions'
-    id 'org.springframework.boot' version '4.0.5'
+    id 'org.springframework.boot' version '4.0.6'
     id 'org.dddjava.jig-gradle-plugin' version '2026.4.1'
 }